Finding the Fourth Proportional to 21,761, 32,636.92 and 10,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,761 : 32,636.92 = 10,656.50 : x
2. Step 2: Convert to fraction form
   21,761/32,636.92 = 10,656.50/x
3. Step 3: Cross multiply
   21,761x = 32,636.92 × 10,656.50
4. Step 4: Simplify right side
   21,761x = 347,795,337.98
5. Step 5: Solve for x
   x = 347,795,337.98/21,761
6. Step 6: Final answer
   x = 15,982.51