Finding the Fourth Proportional to 13,475.59, 18,596.28 and 7,507.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,475.59 : 18,596.28 = 7,507.20 : x
2. Step 2: Convert to fraction form
   13,475.59/18,596.28 = 7,507.20/x
3. Step 3: Cross multiply
   13,475.59x = 18,596.28 × 7,507.20
4. Step 4: Simplify right side
   13,475.59x = 139,605,993.22
5. Step 5: Solve for x
   x = 139,605,993.22/13,475.59
6. Step 6: Final answer
   x = 10,359.92