Finding the Fourth Proportional to 22,141.55, 30,551.48 and 13,187.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,141.55 : 30,551.48 = 13,187.61 : x
2. Step 2: Convert to fraction form
   22,141.55/30,551.48 = 13,187.61/x
3. Step 3: Cross multiply
   22,141.55x = 30,551.48 × 13,187.61
4. Step 4: Simplify right side
   22,141.55x = 402,900,986.68
5. Step 5: Solve for x
   x = 402,900,986.68/22,141.55
6. Step 6: Final answer
   x = 18,196.60