Finding the Fourth Proportional to 9,342.53, 12,892.70 and 5,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,342.53 : 12,892.70 = 5,150.78 : x
2. Step 2: Convert to fraction form
   9,342.53/12,892.70 = 5,150.78/x
3. Step 3: Cross multiply
   9,342.53x = 12,892.70 × 5,150.78
4. Step 4: Simplify right side
   9,342.53x = 66,407,461.31
5. Step 5: Solve for x
   x = 66,407,461.31/9,342.53
6. Step 6: Final answer
   x = 7,108.08