Finding the Fourth Proportional to 21,061.95, 29,065.31 and 11,630.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.95 : 29,065.31 = 11,630.31 : x
2. Step 2: Convert to fraction form
   21,061.95/29,065.31 = 11,630.31/x
3. Step 3: Cross multiply
   21,061.95x = 29,065.31 × 11,630.31
4. Step 4: Simplify right side
   21,061.95x = 338,038,565.55
5. Step 5: Solve for x
   x = 338,038,565.55/21,061.95
6. Step 6: Final answer
   x = 16,049.73