Finding the Fourth Proportional to 9,365.67, 12,925.92 and 5,386.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,365.67 : 12,925.92 = 5,386.71 : x
2. Step 2: Convert to fraction form
   9,365.67/12,925.92 = 5,386.71/x
3. Step 3: Cross multiply
   9,365.67x = 12,925.92 × 5,386.71
4. Step 4: Simplify right side
   9,365.67x = 69,628,182.52
5. Step 5: Solve for x
   x = 69,628,182.52/9,365.67
6. Step 6: Final answer
   x = 7,434.40