Finding the Fourth Proportional to 12,082.04, 18,112.98 and 8,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,082.04 : 18,112.98 = 8,391.50 : x
2. Step 2: Convert to fraction form
   12,082.04/18,112.98 = 8,391.50/x
3. Step 3: Cross multiply
   12,082.04x = 18,112.98 × 8,391.50
4. Step 4: Simplify right side
   12,082.04x = 151,995,071.67
5. Step 5: Solve for x
   x = 151,995,071.67/12,082.04
6. Step 6: Final answer
   x = 12,580.25