Finding the Fourth Proportional to 9,261.18, 12,780.43 and 5,012.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.18 : 12,780.43 = 5,012.24 : x
2. Step 2: Convert to fraction form
   9,261.18/12,780.43 = 5,012.24/x
3. Step 3: Cross multiply
   9,261.18x = 12,780.43 × 5,012.24
4. Step 4: Simplify right side
   9,261.18x = 64,058,582.46
5. Step 5: Solve for x
   x = 64,058,582.46/9,261.18
6. Step 6: Final answer
   x = 6,916.89