Finding the Fourth Proportional to 23,912.32, 32,979.35 and 21,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,912.32 : 32,979.35 = 21,225.50 : x
2. Step 2: Convert to fraction form
   23,912.32/32,979.35 = 21,225.50/x
3. Step 3: Cross multiply
   23,912.32x = 32,979.35 × 21,225.50
4. Step 4: Simplify right side
   23,912.32x = 700,003,193.43
5. Step 5: Solve for x
   x = 700,003,193.43/23,912.32
6. Step 6: Final answer
   x = 29,273.75