Finding the Fourth Proportional to 21,431.40, 32,142.06 and 5,845.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,431.40 : 32,142.06 = 5,845.32 : x
2. Step 2: Convert to fraction form
   21,431.40/32,142.06 = 5,845.32/x
3. Step 3: Cross multiply
   21,431.40x = 32,142.06 × 5,845.32
4. Step 4: Simplify right side
   21,431.40x = 187,880,626.16
5. Step 5: Solve for x
   x = 187,880,626.16/21,431.40
6. Step 6: Final answer
   x = 8,766.61