Finding the Fourth Proportional to 13,915.98, 19,203.89 and 7,542.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.98 : 19,203.89 = 7,542.54 : x
2. Step 2: Convert to fraction form
   13,915.98/19,203.89 = 7,542.54/x
3. Step 3: Cross multiply
   13,915.98x = 19,203.89 × 7,542.54
4. Step 4: Simplify right side
   13,915.98x = 144,846,070.77
5. Step 5: Solve for x
   x = 144,846,070.77/13,915.98
6. Step 6: Final answer
   x = 10,408.61