Finding the Fourth Proportional to 23,836.38, 32,907.42 and 21,312.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,836.38 : 32,907.42 = 21,312.42 : x
2. Step 2: Convert to fraction form
   23,836.38/32,907.42 = 21,312.42/x
3. Step 3: Cross multiply
   23,836.38x = 32,907.42 × 21,312.42
4. Step 4: Simplify right side
   23,836.38x = 701,336,756.16
5. Step 5: Solve for x
   x = 701,336,756.16/23,836.38
6. Step 6: Final answer
   x = 29,422.96