Finding the Fourth Proportional to 12,105.55, 18,159.50 and 4,710.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.55 : 18,159.50 = 4,710.61 : x
2. Step 2: Convert to fraction form
   12,105.55/18,159.50 = 4,710.61/x
3. Step 3: Cross multiply
   12,105.55x = 18,159.50 × 4,710.61
4. Step 4: Simplify right side
   12,105.55x = 85,542,219.72
5. Step 5: Solve for x
   x = 85,542,219.72/12,105.55
6. Step 6: Final answer
   x = 7,066.37