Finding the Fourth Proportional to 13,113,059,309.55, 18,096,076,368.41 and 7,091,564,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113,059,309.55 : 18,096,076,368.41 = 7,091,564,713.50 : x
2. Step 2: Convert to fraction form
   13,113,059,309.55/18,096,076,368.41 = 7,091,564,713.50/x
3. Step 3: Cross multiply
   13,113,059,309.55x = 18,096,076,368.41 × 7,091,564,713.50
4. Step 4: Simplify right side
   13,113,059,309.55x = 128,329,496,627,017,580,544
5. Step 5: Solve for x
   x = 128,329,496,627,017,580,544/13,113,059,309.55
6. Step 6: Final answer
   x = 9,786,388,789.80