Finding the Fourth Proportional to 21,709.32, 32,567.88 and 7,677.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,709.32 : 32,567.88 = 7,677.48 : x
2. Step 2: Convert to fraction form
   21,709.32/32,567.88 = 7,677.48/x
3. Step 3: Cross multiply
   21,709.32x = 32,567.88 × 7,677.48
4. Step 4: Simplify right side
   21,709.32x = 250,039,247.34
5. Step 5: Solve for x
   x = 250,039,247.34/21,709.32
6. Step 6: Final answer
   x = 11,517.60