Finding the Fourth Proportional to 14,613.98, 21,915.59 and 5,251.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,613.98 : 21,915.59 = 5,251.50 : x
2. Step 2: Convert to fraction form
   14,613.98/21,915.59 = 5,251.50/x
3. Step 3: Cross multiply
   14,613.98x = 21,915.59 × 5,251.50
4. Step 4: Simplify right side
   14,613.98x = 115,089,720.89
5. Step 5: Solve for x
   x = 115,089,720.89/14,613.98
6. Step 6: Final answer
   x = 7,875.32