Finding the Fourth Proportional to 56,573.31, 84,870.90 and 21,510.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,573.31 : 84,870.90 = 21,510.24 : x
2. Step 2: Convert to fraction form
   56,573.31/84,870.90 = 21,510.24/x
3. Step 3: Cross multiply
   56,573.31x = 84,870.90 × 21,510.24
4. Step 4: Simplify right side
   56,573.31x = 1,825,593,428.02
5. Step 5: Solve for x
   x = 1,825,593,428.02/56,573.31
6. Step 6: Final answer
   x = 32,269.52