Finding the Fourth Proportional to 32,438.72, 44,773.92 and 21,136.40

Step by Step Solution

1. Step 1: Write the proportion equation
   32,438.72 : 44,773.92 = 21,136.40 : x
2. Step 2: Convert to fraction form
   32,438.72/44,773.92 = 21,136.40/x
3. Step 3: Cross multiply
   32,438.72x = 44,773.92 × 21,136.40
4. Step 4: Simplify right side
   32,438.72x = 946,359,482.69
5. Step 5: Solve for x
   x = 946,359,482.69/32,438.72
6. Step 6: Final answer
   x = 29,173.76