Finding the Fourth Proportional to 10,089.16, 15,128.51 and 5,930.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.16 : 15,128.51 = 5,930.42 : x
2. Step 2: Convert to fraction form
   10,089.16/15,128.51 = 5,930.42/x
3. Step 3: Cross multiply
   10,089.16x = 15,128.51 × 5,930.42
4. Step 4: Simplify right side
   10,089.16x = 89,718,312.98
5. Step 5: Solve for x
   x = 89,718,312.98/10,089.16
6. Step 6: Final answer
   x = 8,892.55