Finding the Fourth Proportional to 39,429.34, 54,411.69 and 21,524.29

Step by Step Solution

1. Step 1: Write the proportion equation
   39,429.34 : 54,411.69 = 21,524.29 : x
2. Step 2: Convert to fraction form
   39,429.34/54,411.69 = 21,524.29/x
3. Step 3: Cross multiply
   39,429.34x = 54,411.69 × 21,524.29
4. Step 4: Simplify right side
   39,429.34x = 1,171,172,994.95
5. Step 5: Solve for x
   x = 1,171,172,994.95/39,429.34
6. Step 6: Final answer
   x = 29,703.08