Finding the Fourth Proportional to 9,338, 12,886.48 and 5,612.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,338 : 12,886.48 = 5,612.72 : x
2. Step 2: Convert to fraction form
   9,338/12,886.48 = 5,612.72/x
3. Step 3: Cross multiply
   9,338x = 12,886.48 × 5,612.72
4. Step 4: Simplify right side
   9,338x = 72,328,204.03
5. Step 5: Solve for x
   x = 72,328,204.03/9,338
6. Step 6: Final answer
   x = 7,745.58