Finding the Fourth Proportional to 28,385.28, 42,574.72 and 7,610.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28,385.28 : 42,574.72 = 7,610.24 : x
2. Step 2: Convert to fraction form
   28,385.28/42,574.72 = 7,610.24/x
3. Step 3: Cross multiply
   28,385.28x = 42,574.72 × 7,610.24
4. Step 4: Simplify right side
   28,385.28x = 324,003,837.13
5. Step 5: Solve for x
   x = 324,003,837.13/28,385.28
6. Step 6: Final answer
   x = 11,414.50