Finding the Fourth Proportional to 22,159.60, 30,564.61 and 13,200.19

Step by Step Solution

1. Step 1: Write the proportion equation
   22,159.60 : 30,564.61 = 13,200.19 : x
2. Step 2: Convert to fraction form
   22,159.60/30,564.61 = 13,200.19/x
3. Step 3: Cross multiply
   22,159.60x = 30,564.61 × 13,200.19
4. Step 4: Simplify right side
   22,159.60x = 403,458,549.86
5. Step 5: Solve for x
   x = 403,458,549.86/22,159.60
6. Step 6: Final answer
   x = 18,206.94