Finding the Fourth Proportional to 12,020.08, 16,499.42 and 10,664.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.08 : 16,499.42 = 10,664.14 : x
2. Step 2: Convert to fraction form
   12,020.08/16,499.42 = 10,664.14/x
3. Step 3: Cross multiply
   12,020.08x = 16,499.42 × 10,664.14
4. Step 4: Simplify right side
   12,020.08x = 175,952,124.80
5. Step 5: Solve for x
   x = 175,952,124.80/12,020.08
6. Step 6: Final answer
   x = 14,638.18