Finding the Fourth Proportional to 13,915.92, 19,203.98 and 7,542.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.92 : 19,203.98 = 7,542.57 : x
2. Step 2: Convert to fraction form
   13,915.92/19,203.98 = 7,542.57/x
3. Step 3: Cross multiply
   13,915.92x = 19,203.98 × 7,542.57
4. Step 4: Simplify right side
   13,915.92x = 144,847,363.43
5. Step 5: Solve for x
   x = 144,847,363.43/13,915.92
6. Step 6: Final answer
   x = 10,408.75