Finding the Fourth Proportional to 14,672.88, 21,996 and 5,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,672.88 : 21,996 = 5,310.72 : x
2. Step 2: Convert to fraction form
   14,672.88/21,996 = 5,310.72/x
3. Step 3: Cross multiply
   14,672.88x = 21,996 × 5,310.72
4. Step 4: Simplify right side
   14,672.88x = 116,814,597.12
5. Step 5: Solve for x
   x = 116,814,597.12/14,672.88
6. Step 6: Final answer
   x = 7,961.26