Finding the Fourth Proportional to 21,978.75, 32,972.27 and 8,832.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978.75 : 32,972.27 = 8,832.14 : x
2. Step 2: Convert to fraction form
   21,978.75/32,972.27 = 8,832.14/x
3. Step 3: Cross multiply
   21,978.75x = 32,972.27 × 8,832.14
4. Step 4: Simplify right side
   21,978.75x = 291,215,704.76
5. Step 5: Solve for x
   x = 291,215,704.76/21,978.75
6. Step 6: Final answer
   x = 13,249.88