Finding the Fourth Proportional to 10,139.32, 15,187.38 and 5,754.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.32 : 15,187.38 = 5,754.52 : x
2. Step 2: Convert to fraction form
   10,139.32/15,187.38 = 5,754.52/x
3. Step 3: Cross multiply
   10,139.32x = 15,187.38 × 5,754.52
4. Step 4: Simplify right side
   10,139.32x = 87,396,081.96
5. Step 5: Solve for x
   x = 87,396,081.96/10,139.32
6. Step 6: Final answer
   x = 8,619.52