Finding the Fourth Proportional to 14,648.18, 21,967.78 and 5,287.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,648.18 : 21,967.78 = 5,287.05 : x
2. Step 2: Convert to fraction form
   14,648.18/21,967.78 = 5,287.05/x
3. Step 3: Cross multiply
   14,648.18x = 21,967.78 × 5,287.05
4. Step 4: Simplify right side
   14,648.18x = 116,144,792.95
5. Step 5: Solve for x
   x = 116,144,792.95/14,648.18
6. Step 6: Final answer
   x = 7,928.96