Finding the Fourth Proportional to 16,086.60, 22,209.90 and 13,109.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,086.60 : 22,209.90 = 13,109.55 : x
2. Step 2: Convert to fraction form
   16,086.60/22,209.90 = 13,109.55/x
3. Step 3: Cross multiply
   16,086.60x = 22,209.90 × 13,109.55
4. Step 4: Simplify right side
   16,086.60x = 291,161,794.55
5. Step 5: Solve for x
   x = 291,161,794.55/16,086.60
6. Step 6: Final answer
   x = 18,099.65