Finding the Fourth Proportional to 17,969.05, 26,920.71 and 13,026.43

Step by Step Solution

1. Step 1: Write the proportion equation
   17,969.05 : 26,920.71 = 13,026.43 : x
2. Step 2: Convert to fraction form
   17,969.05/26,920.71 = 13,026.43/x
3. Step 3: Cross multiply
   17,969.05x = 26,920.71 × 13,026.43
4. Step 4: Simplify right side
   17,969.05x = 350,680,609.76
5. Step 5: Solve for x
   x = 350,680,609.76/17,969.05
6. Step 6: Final answer
   x = 19,515.82