Finding the Fourth Proportional to 21,561.96, 32,345.82 and 7,706.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,561.96 : 32,345.82 = 7,706.28 : x
2. Step 2: Convert to fraction form
   21,561.96/32,345.82 = 7,706.28/x
3. Step 3: Cross multiply
   21,561.96x = 32,345.82 × 7,706.28
4. Step 4: Simplify right side
   21,561.96x = 249,265,945.75
5. Step 5: Solve for x
   x = 249,265,945.75/21,561.96
6. Step 6: Final answer
   x = 11,560.45