Finding the Fourth Proportional to 8,934.88, 12,330.12 and 5,398.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,934.88 : 12,330.12 = 5,398.12 : x
2. Step 2: Convert to fraction form
   8,934.88/12,330.12 = 5,398.12/x
3. Step 3: Cross multiply
   8,934.88x = 12,330.12 × 5,398.12
4. Step 4: Simplify right side
   8,934.88x = 66,559,467.37
5. Step 5: Solve for x
   x = 66,559,467.37/8,934.88
6. Step 6: Final answer
   x = 7,449.40