Finding the Fourth Proportional to 10,899.97, 15,042.29 and 7,718.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.97 : 15,042.29 = 7,718.96 : x
2. Step 2: Convert to fraction form
   10,899.97/15,042.29 = 7,718.96/x
3. Step 3: Cross multiply
   10,899.97x = 15,042.29 × 7,718.96
4. Step 4: Simplify right side
   10,899.97x = 116,110,833.83
5. Step 5: Solve for x
   x = 116,110,833.83/10,899.97
6. Step 6: Final answer
   x = 10,652.40