Finding the Fourth Proportional to 9,347.38, 12,900.15 and 5,369.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,347.38 : 12,900.15 = 5,369.77 : x
2. Step 2: Convert to fraction form
   9,347.38/12,900.15 = 5,369.77/x
3. Step 3: Cross multiply
   9,347.38x = 12,900.15 × 5,369.77
4. Step 4: Simplify right side
   9,347.38x = 69,270,854.59
5. Step 5: Solve for x
   x = 69,270,854.59/9,347.38
6. Step 6: Final answer
   x = 7,410.73