Finding the Fourth Proportional to 10,719.49, 14,785.52 and 7,539.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,719.49 : 14,785.52 = 7,539.53 : x
2. Step 2: Convert to fraction form
   10,719.49/14,785.52 = 7,539.53/x
3. Step 3: Cross multiply
   10,719.49x = 14,785.52 × 7,539.53
4. Step 4: Simplify right side
   10,719.49x = 111,475,833.91
5. Step 5: Solve for x
   x = 111,475,833.91/10,719.49
6. Step 6: Final answer
   x = 10,399.36