Finding the Fourth Proportional to 21,648.89, 32,501.88 and 21,399.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,648.89 : 32,501.88 = 21,399.81 : x
2. Step 2: Convert to fraction form
   21,648.89/32,501.88 = 21,399.81/x
3. Step 3: Cross multiply
   21,648.89x = 32,501.88 × 21,399.81
4. Step 4: Simplify right side
   21,648.89x = 695,534,056.64
5. Step 5: Solve for x
   x = 695,534,056.64/21,648.89
6. Step 6: Final answer
   x = 32,127.94