Finding the Fourth Proportional to 9,407.52, 12,981.96 and 5,158.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407.52 : 12,981.96 = 5,158.62 : x
2. Step 2: Convert to fraction form
   9,407.52/12,981.96 = 5,158.62/x
3. Step 3: Cross multiply
   9,407.52x = 12,981.96 × 5,158.62
4. Step 4: Simplify right side
   9,407.52x = 66,968,998.50
5. Step 5: Solve for x
   x = 66,968,998.50/9,407.52
6. Step 6: Final answer
   x = 7,118.67