Finding the Fourth Proportional to 12,061.02, 18,119.34 and 11,562.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,061.02 : 18,119.34 = 11,562.80 : x
2. Step 2: Convert to fraction form
   12,061.02/18,119.34 = 11,562.80/x
3. Step 3: Cross multiply
   12,061.02x = 18,119.34 × 11,562.80
4. Step 4: Simplify right side
   12,061.02x = 209,510,304.55
5. Step 5: Solve for x
   x = 209,510,304.55/12,061.02
6. Step 6: Final answer
   x = 17,370.86