Finding the Fourth Proportional to 22,434.76, 30,959.56 and 13,004.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,434.76 : 30,959.56 = 13,004.20 : x
2. Step 2: Convert to fraction form
   22,434.76/30,959.56 = 13,004.20/x
3. Step 3: Cross multiply
   22,434.76x = 30,959.56 × 13,004.20
4. Step 4: Simplify right side
   22,434.76x = 402,604,310.15
5. Step 5: Solve for x
   x = 402,604,310.15/22,434.76
6. Step 6: Final answer
   x = 17,945.56