Finding the Fourth Proportional to 12,102.12, 16,702.78 and 7,389.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,102.12 : 16,702.78 = 7,389.16 : x
2. Step 2: Convert to fraction form
   12,102.12/16,702.78 = 7,389.16/x
3. Step 3: Cross multiply
   12,102.12x = 16,702.78 × 7,389.16
4. Step 4: Simplify right side
   12,102.12x = 123,419,513.86
5. Step 5: Solve for x
   x = 123,419,513.86/12,102.12
6. Step 6: Final answer
   x = 10,198.17