Finding the Fourth Proportional to 17,742.72, 26,609.53 and 5,259.82

Step by Step Solution

1. Step 1: Write the proportion equation
   17,742.72 : 26,609.53 = 5,259.82 : x
2. Step 2: Convert to fraction form
   17,742.72/26,609.53 = 5,259.82/x
3. Step 3: Cross multiply
   17,742.72x = 26,609.53 × 5,259.82
4. Step 4: Simplify right side
   17,742.72x = 139,961,338.08
5. Step 5: Solve for x
   x = 139,961,338.08/17,742.72
6. Step 6: Final answer
   x = 7,888.38