Finding the Fourth Proportional to 10,059.28, 15,073.52 and 5,121.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,059.28 : 15,073.52 = 5,121.52 : x
2. Step 2: Convert to fraction form
   10,059.28/15,073.52 = 5,121.52/x
3. Step 3: Cross multiply
   10,059.28x = 15,073.52 × 5,121.52
4. Step 4: Simplify right side
   10,059.28x = 77,199,334.15
5. Step 5: Solve for x
   x = 77,199,334.15/10,059.28
6. Step 6: Final answer
   x = 7,674.44