Finding the Fourth Proportional to 22,139.76, 30,546.32 and 13,182.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,139.76 : 30,546.32 = 13,182.80 : x
2. Step 2: Convert to fraction form
   22,139.76/30,546.32 = 13,182.80/x
3. Step 3: Cross multiply
   22,139.76x = 30,546.32 × 13,182.80
4. Step 4: Simplify right side
   22,139.76x = 402,686,027.30
5. Step 5: Solve for x
   x = 402,686,027.30/22,139.76
6. Step 6: Final answer
   x = 18,188.36