Finding the Fourth Proportional to 9,315.23, 12,854.25 and 5,486.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.23 : 12,854.25 = 5,486.27 : x
2. Step 2: Convert to fraction form
   9,315.23/12,854.25 = 5,486.27/x
3. Step 3: Cross multiply
   9,315.23x = 12,854.25 × 5,486.27
4. Step 4: Simplify right side
   9,315.23x = 70,521,886.15
5. Step 5: Solve for x
   x = 70,521,886.15/9,315.23
6. Step 6: Final answer
   x = 7,570.60