Finding the Fourth Proportional to 9,309.12, 12,846.48 and 5,117.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,309.12 : 12,846.48 = 5,117.52 : x
2. Step 2: Convert to fraction form
   9,309.12/12,846.48 = 5,117.52/x
3. Step 3: Cross multiply
   9,309.12x = 12,846.48 × 5,117.52
4. Step 4: Simplify right side
   9,309.12x = 65,742,118.33
5. Step 5: Solve for x
   x = 65,742,118.33/9,309.12
6. Step 6: Final answer
   x = 7,062.12