Finding the Fourth Proportional to 22,112.57, 30,517.78 and 13,612.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,112.57 : 30,517.78 = 13,612.98 : x
2. Step 2: Convert to fraction form
   22,112.57/30,517.78 = 13,612.98/x
3. Step 3: Cross multiply
   22,112.57x = 30,517.78 × 13,612.98
4. Step 4: Simplify right side
   22,112.57x = 415,437,928.78
5. Step 5: Solve for x
   x = 415,437,928.78/22,112.57
6. Step 6: Final answer
   x = 18,787.41