Finding the Fourth Proportional to 9,315.99, 12,856.86 and 5,537.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.99 : 12,856.86 = 5,537.25 : x
2. Step 2: Convert to fraction form
   9,315.99/12,856.86 = 5,537.25/x
3. Step 3: Cross multiply
   9,315.99x = 12,856.86 × 5,537.25
4. Step 4: Simplify right side
   9,315.99x = 71,191,648.04
5. Step 5: Solve for x
   x = 71,191,648.04/9,315.99
6. Step 6: Final answer
   x = 7,641.88