Finding the Fourth Proportional to 14,150.30, 21,219.88 and 5,142.29

Step by Step Solution

1. Step 1: Write the proportion equation
   14,150.30 : 21,219.88 = 5,142.29 : x
2. Step 2: Convert to fraction form
   14,150.30/21,219.88 = 5,142.29/x
3. Step 3: Cross multiply
   14,150.30x = 21,219.88 × 5,142.29
4. Step 4: Simplify right side
   14,150.30x = 109,118,860.92
5. Step 5: Solve for x
   x = 109,118,860.92/14,150.30
6. Step 6: Final answer
   x = 7,711.41