Finding the Fourth Proportional to 17,689.43, 26,530.16 and 5,210.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,689.43 : 26,530.16 = 5,210.30 : x
2. Step 2: Convert to fraction form
   17,689.43/26,530.16 = 5,210.30/x
3. Step 3: Cross multiply
   17,689.43x = 26,530.16 × 5,210.30
4. Step 4: Simplify right side
   17,689.43x = 138,229,933.95
5. Step 5: Solve for x
   x = 138,229,933.95/17,689.43
6. Step 6: Final answer
   x = 7,814.27