Finding the Fourth Proportional to 12,347.89, 18,522.29 and 5,772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,347.89 : 18,522.29 = 5,772.31 : x
2. Step 2: Convert to fraction form
   12,347.89/18,522.29 = 5,772.31/x
3. Step 3: Cross multiply
   12,347.89x = 18,522.29 × 5,772.31
4. Step 4: Simplify right side
   12,347.89x = 106,916,439.63
5. Step 5: Solve for x
   x = 106,916,439.63/12,347.89
6. Step 6: Final answer
   x = 8,658.68