Finding the Fourth Proportional to 17,665.79, 26,498.84 and 5,186.02

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.79 : 26,498.84 = 5,186.02 : x
2. Step 2: Convert to fraction form
   17,665.79/26,498.84 = 5,186.02/x
3. Step 3: Cross multiply
   17,665.79x = 26,498.84 × 5,186.02
4. Step 4: Simplify right side
   17,665.79x = 137,423,514.22
5. Step 5: Solve for x
   x = 137,423,514.22/17,665.79
6. Step 6: Final answer
   x = 7,779.08