Finding the Fourth Proportional to 22,131.39, 30,537.75 and 13,178.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,131.39 : 30,537.75 = 13,178.61 : x
2. Step 2: Convert to fraction form
   22,131.39/30,537.75 = 13,178.61/x
3. Step 3: Cross multiply
   22,131.39x = 30,537.75 × 13,178.61
4. Step 4: Simplify right side
   22,131.39x = 402,445,097.53
5. Step 5: Solve for x
   x = 402,445,097.53/22,131.39
6. Step 6: Final answer
   x = 18,184.36