Finding the Fourth Proportional to 22,080.90, 30,482.82 and 13,131.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,080.90 : 30,482.82 = 13,131.30 : x
2. Step 2: Convert to fraction form
   22,080.90/30,482.82 = 13,131.30/x
3. Step 3: Cross multiply
   22,080.90x = 30,482.82 × 13,131.30
4. Step 4: Simplify right side
   22,080.90x = 400,279,054.27
5. Step 5: Solve for x
   x = 400,279,054.27/22,080.90
6. Step 6: Final answer
   x = 18,127.84