Finding the Fourth Proportional to 11,285,499.92, 15,578,755.80 and 7,619,382.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,285,499.92 : 15,578,755.80 = 7,619,382.72 : x
2. Step 2: Convert to fraction form
   11,285,499.92/15,578,755.80 = 7,619,382.72/x
3. Step 3: Cross multiply
   11,285,499.92x = 15,578,755.80 × 7,619,382.72
4. Step 4: Simplify right side
   11,285,499.92x = 118,700,502,741,619.78
5. Step 5: Solve for x
   x = 118,700,502,741,619.78/11,285,499.92
6. Step 6: Final answer
   x = 10,517,965.85