Finding the Fourth Proportional to 21,152.52, 31,704.78 and 16,437.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,152.52 : 31,704.78 = 16,437.48 : x
2. Step 2: Convert to fraction form
   21,152.52/31,704.78 = 16,437.48/x
3. Step 3: Cross multiply
   21,152.52x = 31,704.78 × 16,437.48
4. Step 4: Simplify right side
   21,152.52x = 521,146,687.15
5. Step 5: Solve for x
   x = 521,146,687.15/21,152.52
6. Step 6: Final answer
   x = 24,637.57