Finding the Fourth Proportional to 20,601.88, 30,844.42 and 13,560.71

Step by Step Solution

1. Step 1: Write the proportion equation
   20,601.88 : 30,844.42 = 13,560.71 : x
2. Step 2: Convert to fraction form
   20,601.88/30,844.42 = 13,560.71/x
3. Step 3: Cross multiply
   20,601.88x = 30,844.42 × 13,560.71
4. Step 4: Simplify right side
   20,601.88x = 418,272,046.61
5. Step 5: Solve for x
   x = 418,272,046.61/20,601.88
6. Step 6: Final answer
   x = 20,302.62