Finding the Fourth Proportional to 9,507.98, 13,120.92 and 5,259.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,507.98 : 13,120.92 = 5,259.22 : x
2. Step 2: Convert to fraction form
   9,507.98/13,120.92 = 5,259.22/x
3. Step 3: Cross multiply
   9,507.98x = 13,120.92 × 5,259.22
4. Step 4: Simplify right side
   9,507.98x = 69,005,804.88
5. Step 5: Solve for x
   x = 69,005,804.88/9,507.98
6. Step 6: Final answer
   x = 7,257.67