Finding the Fourth Proportional to 9,348.18, 12,899.90 and 5,366.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,348.18 : 12,899.90 = 5,366.49 : x
2. Step 2: Convert to fraction form
   9,348.18/12,899.90 = 5,366.49/x
3. Step 3: Cross multiply
   9,348.18x = 12,899.90 × 5,366.49
4. Step 4: Simplify right side
   9,348.18x = 69,227,157.52
5. Step 5: Solve for x
   x = 69,227,157.52/9,348.18
6. Step 6: Final answer
   x = 7,405.42