Finding the Fourth Proportional to 11,580.71, 17,370.60 and 8,060.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,580.71 : 17,370.60 = 8,060.55 : x
2. Step 2: Convert to fraction form
   11,580.71/17,370.60 = 8,060.55/x
3. Step 3: Cross multiply
   11,580.71x = 17,370.60 × 8,060.55
4. Step 4: Simplify right side
   11,580.71x = 140,016,589.83
5. Step 5: Solve for x
   x = 140,016,589.83/11,580.71
6. Step 6: Final answer
   x = 12,090.50