Finding the Fourth Proportional to 9,262.79, 12,784.26 and 5,488.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.79 : 12,784.26 = 5,488.08 : x
2. Step 2: Convert to fraction form
   9,262.79/12,784.26 = 5,488.08/x
3. Step 3: Cross multiply
   9,262.79x = 12,784.26 × 5,488.08
4. Step 4: Simplify right side
   9,262.79x = 70,161,050.22
5. Step 5: Solve for x
   x = 70,161,050.22/9,262.79
6. Step 6: Final answer
   x = 7,574.51