Finding the Fourth Proportional to 17,690.99, 26,501.72 and 10,279.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,690.99 : 26,501.72 = 10,279.89 : x
2. Step 2: Convert to fraction form
   17,690.99/26,501.72 = 10,279.89/x
3. Step 3: Cross multiply
   17,690.99x = 26,501.72 × 10,279.89
4. Step 4: Simplify right side
   17,690.99x = 272,434,715.01
5. Step 5: Solve for x
   x = 272,434,715.01/17,690.99
6. Step 6: Final answer
   x = 15,399.64