Finding the Fourth Proportional to 12,111.02, 18,160.68 and 5,089.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.02 : 18,160.68 = 5,089.04 : x
2. Step 2: Convert to fraction form
   12,111.02/18,160.68 = 5,089.04/x
3. Step 3: Cross multiply
   12,111.02x = 18,160.68 × 5,089.04
4. Step 4: Simplify right side
   12,111.02x = 92,420,426.95
5. Step 5: Solve for x
   x = 92,420,426.95/12,111.02
6. Step 6: Final answer
   x = 7,631.10