Finding the Fourth Proportional to 14,354.58, 19,809.15 and 8,387.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,354.58 : 19,809.15 = 8,387.16 : x
2. Step 2: Convert to fraction form
   14,354.58/19,809.15 = 8,387.16/x
3. Step 3: Cross multiply
   14,354.58x = 19,809.15 × 8,387.16
4. Step 4: Simplify right side
   14,354.58x = 166,142,510.51
5. Step 5: Solve for x
   x = 166,142,510.51/14,354.58
6. Step 6: Final answer
   x = 11,574.18