Finding the Fourth Proportional to 14,499.64, 19,998.42 and 12,486.54

Step by Step Solution

1. Step 1: Write the proportion equation
   14,499.64 : 19,998.42 = 12,486.54 : x
2. Step 2: Convert to fraction form
   14,499.64/19,998.42 = 12,486.54/x
3. Step 3: Cross multiply
   14,499.64x = 19,998.42 × 12,486.54
4. Step 4: Simplify right side
   14,499.64x = 249,711,071.27
5. Step 5: Solve for x
   x = 249,711,071.27/14,499.64
6. Step 6: Final answer
   x = 17,221.88