Finding the Fourth Proportional to 9,145.52, 12,620.15 and 5,368.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.52 : 12,620.15 = 5,368.83 : x
2. Step 2: Convert to fraction form
   9,145.52/12,620.15 = 5,368.83/x
3. Step 3: Cross multiply
   9,145.52x = 12,620.15 × 5,368.83
4. Step 4: Simplify right side
   9,145.52x = 67,755,439.92
5. Step 5: Solve for x
   x = 67,755,439.92/9,145.52
6. Step 6: Final answer
   x = 7,408.60