Finding the Fourth Proportional to 13,123,978.92, 18,112,726.62 and 7,616,171.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123,978.92 : 18,112,726.62 = 7,616,171.16 : x
2. Step 2: Convert to fraction form
   13,123,978.92/18,112,726.62 = 7,616,171.16/x
3. Step 3: Cross multiply
   13,123,978.92x = 18,112,726.62 × 7,616,171.16
4. Step 4: Simplify right side
   13,123,978.92x = 137,949,626,112,208.30
5. Step 5: Solve for x
   x = 137,949,626,112,208.30/13,123,978.92
6. Step 6: Final answer
   x = 10,511,265.44