Finding the Fourth Proportional to 13,112,487.48, 19,664,007.28 and 5,540,043.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112,487.48 : 19,664,007.28 = 5,540,043.72 : x
2. Step 2: Convert to fraction form
   13,112,487.48/19,664,007.28 = 5,540,043.72/x
3. Step 3: Cross multiply
   13,112,487.48x = 19,664,007.28 × 5,540,043.72
4. Step 4: Simplify right side
   13,112,487.48x = 108,939,460,041,598.28
5. Step 5: Solve for x
   x = 108,939,460,041,598.28/13,112,487.48
6. Step 6: Final answer
   x = 8,308,069.71