Finding the Fourth Proportional to 13,162.74, 18,158.46 and 7,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.74 : 18,158.46 = 7,570.50 : x
2. Step 2: Convert to fraction form
   13,162.74/18,158.46 = 7,570.50/x
3. Step 3: Cross multiply
   13,162.74x = 18,158.46 × 7,570.50
4. Step 4: Simplify right side
   13,162.74x = 137,468,621.43
5. Step 5: Solve for x
   x = 137,468,621.43/13,162.74
6. Step 6: Final answer
   x = 10,443.77