Finding the Fourth Proportional to 12,065.55, 18,103.49 and 5,047.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,065.55 : 18,103.49 = 5,047.20 : x
2. Step 2: Convert to fraction form
   12,065.55/18,103.49 = 5,047.20/x
3. Step 3: Cross multiply
   12,065.55x = 18,103.49 × 5,047.20
4. Step 4: Simplify right side
   12,065.55x = 91,371,909.49
5. Step 5: Solve for x
   x = 91,371,909.49/12,065.55
6. Step 6: Final answer
   x = 7,572.96