Finding the Fourth Proportional to 23,828.78, 32,817.12 and 23,312.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,828.78 : 32,817.12 = 23,312.21 : x
2. Step 2: Convert to fraction form
   23,828.78/32,817.12 = 23,312.21/x
3. Step 3: Cross multiply
   23,828.78x = 32,817.12 × 23,312.21
4. Step 4: Simplify right side
   23,828.78x = 765,039,428.95
5. Step 5: Solve for x
   x = 765,039,428.95/23,828.78
6. Step 6: Final answer
   x = 32,105.70