Finding the Fourth Proportional to 14,355.40, 19,810.50 and 8,387.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,355.40 : 19,810.50 = 8,387.32 : x
2. Step 2: Convert to fraction form
   14,355.40/19,810.50 = 8,387.32/x
3. Step 3: Cross multiply
   14,355.40x = 19,810.50 × 8,387.32
4. Step 4: Simplify right side
   14,355.40x = 166,157,002.86
5. Step 5: Solve for x
   x = 166,157,002.86/14,355.40
6. Step 6: Final answer
   x = 11,574.53