Finding the Fourth Proportional to 14,150.72, 21,221.64 and 4,789

Step by Step Solution

1. Step 1: Write the proportion equation
   14,150.72 : 21,221.64 = 4,789 : x
2. Step 2: Convert to fraction form
   14,150.72/21,221.64 = 4,789/x
3. Step 3: Cross multiply
   14,150.72x = 21,221.64 × 4,789
4. Step 4: Simplify right side
   14,150.72x = 101,630,433.96
5. Step 5: Solve for x
   x = 101,630,433.96/14,150.72
6. Step 6: Final answer
   x = 7,182.00