Finding the Fourth Proportional to 14,156.18, 21,243.52 and 5,391.18

Step by Step Solution

1. Step 1: Write the proportion equation
   14,156.18 : 21,243.52 = 5,391.18 : x
2. Step 2: Convert to fraction form
   14,156.18/21,243.52 = 5,391.18/x
3. Step 3: Cross multiply
   14,156.18x = 21,243.52 × 5,391.18
4. Step 4: Simplify right side
   14,156.18x = 114,527,640.15
5. Step 5: Solve for x
   x = 114,527,640.15/14,156.18
6. Step 6: Final answer
   x = 8,090.29