Finding the Fourth Proportional to 21,686.27, 32,533.38 and 7,646.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,686.27 : 32,533.38 = 7,646.72 : x
2. Step 2: Convert to fraction form
   21,686.27/32,533.38 = 7,646.72/x
3. Step 3: Cross multiply
   21,686.27x = 32,533.38 × 7,646.72
4. Step 4: Simplify right side
   21,686.27x = 248,773,484.85
5. Step 5: Solve for x
   x = 248,773,484.85/21,686.27
6. Step 6: Final answer
   x = 11,471.48