Finding the Fourth Proportional to 21,762, 32,478.57 and 19,662.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,762 : 32,478.57 = 19,662.48 : x
2. Step 2: Convert to fraction form
   21,762/32,478.57 = 19,662.48/x
3. Step 3: Cross multiply
   21,762x = 32,478.57 × 19,662.48
4. Step 4: Simplify right side
   21,762x = 638,609,233.05
5. Step 5: Solve for x
   x = 638,609,233.05/21,762
6. Step 6: Final answer
   x = 29,345.15