Finding the Fourth Proportional to 25,038.50, 34,554.21 and 13,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,038.50 : 34,554.21 = 13,860.50 : x
2. Step 2: Convert to fraction form
   25,038.50/34,554.21 = 13,860.50/x
3. Step 3: Cross multiply
   25,038.50x = 34,554.21 × 13,860.50
4. Step 4: Simplify right side
   25,038.50x = 478,938,627.71
5. Step 5: Solve for x
   x = 478,938,627.71/25,038.50
6. Step 6: Final answer
   x = 19,128.09