Finding the Fourth Proportional to 10,421.72, 15,632.52 and 2,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,421.72 : 15,632.52 = 2,630.50 : x
2. Step 2: Convert to fraction form
   10,421.72/15,632.52 = 2,630.50/x
3. Step 3: Cross multiply
   10,421.72x = 15,632.52 × 2,630.50
4. Step 4: Simplify right side
   10,421.72x = 41,121,343.86
5. Step 5: Solve for x
   x = 41,121,343.86/10,421.72
6. Step 6: Final answer
   x = 3,945.73