Finding the Fourth Proportional to 39,472.84, 54,472.71 and 21,567.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,472.84 : 54,472.71 = 21,567.89 : x
2. Step 2: Convert to fraction form
   39,472.84/54,472.71 = 21,567.89/x
3. Step 3: Cross multiply
   39,472.84x = 54,472.71 × 21,567.89
4. Step 4: Simplify right side
   39,472.84x = 1,174,861,634.34
5. Step 5: Solve for x
   x = 1,174,861,634.34/39,472.84
6. Step 6: Final answer
   x = 29,763.80