Finding the Fourth Proportional to 13,162.55, 18,164.57 and 7,194.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.55 : 18,164.57 = 7,194.47 : x
2. Step 2: Convert to fraction form
   13,162.55/18,164.57 = 7,194.47/x
3. Step 3: Cross multiply
   13,162.55x = 18,164.57 × 7,194.47
4. Step 4: Simplify right side
   13,162.55x = 130,684,327.13
5. Step 5: Solve for x
   x = 130,684,327.13/13,162.55
6. Step 6: Final answer
   x = 9,928.50