Finding the Fourth Proportional to 13,061,079.11, 18,024,300.71 and 7,180,813.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061,079.11 : 18,024,300.71 = 7,180,813.35 : x
2. Step 2: Convert to fraction form
   13,061,079.11/18,024,300.71 = 7,180,813.35/x
3. Step 3: Cross multiply
   13,061,079.11x = 18,024,300.71 × 7,180,813.35
4. Step 4: Simplify right side
   13,061,079.11x = 129,429,139,126,878.39
5. Step 5: Solve for x
   x = 129,429,139,126,878.39/13,061,079.11
6. Step 6: Final answer
   x = 9,909,528.77