Finding the Fourth Proportional to 14,498.72, 21,751.12 and 4,638.88

Step by Step Solution

1. Step 1: Write the proportion equation
   14,498.72 : 21,751.12 = 4,638.88 : x
2. Step 2: Convert to fraction form
   14,498.72/21,751.12 = 4,638.88/x
3. Step 3: Cross multiply
   14,498.72x = 21,751.12 × 4,638.88
4. Step 4: Simplify right side
   14,498.72x = 100,900,835.55
5. Step 5: Solve for x
   x = 100,900,835.55/14,498.72
6. Step 6: Final answer
   x = 6,959.29