Finding the Fourth Proportional to 13,915.31, 19,203.17 and 7,627.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.31 : 19,203.17 = 7,627.69 : x
2. Step 2: Convert to fraction form
   13,915.31/19,203.17 = 7,627.69/x
3. Step 3: Cross multiply
   13,915.31x = 19,203.17 × 7,627.69
4. Step 4: Simplify right side
   13,915.31x = 146,475,827.78
5. Step 5: Solve for x
   x = 146,475,827.78/13,915.31
6. Step 6: Final answer
   x = 10,526.24