Finding the Fourth Proportional to 21,688.83, 32,536.62 and 7,650.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,688.83 : 32,536.62 = 7,650.72 : x
2. Step 2: Convert to fraction form
   21,688.83/32,536.62 = 7,650.72/x
3. Step 3: Cross multiply
   21,688.83x = 32,536.62 × 7,650.72
4. Step 4: Simplify right side
   21,688.83x = 248,928,569.37
5. Step 5: Solve for x
   x = 248,928,569.37/21,688.83
6. Step 6: Final answer
   x = 11,477.27