Finding the Fourth Proportional to 22,085.39, 30,477.96 and 13,131.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.39 : 30,477.96 = 13,131.15 : x
2. Step 2: Convert to fraction form
   22,085.39/30,477.96 = 13,131.15/x
3. Step 3: Cross multiply
   22,085.39x = 30,477.96 × 13,131.15
4. Step 4: Simplify right side
   22,085.39x = 400,210,664.45
5. Step 5: Solve for x
   x = 400,210,664.45/22,085.39
6. Step 6: Final answer
   x = 18,121.06