Finding the Fourth Proportional to 12,791.03, 17,642.59 and 7,486.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791.03 : 17,642.59 = 7,486.90 : x
2. Step 2: Convert to fraction form
   12,791.03/17,642.59 = 7,486.90/x
3. Step 3: Cross multiply
   12,791.03x = 17,642.59 × 7,486.90
4. Step 4: Simplify right side
   12,791.03x = 132,088,244.25
5. Step 5: Solve for x
   x = 132,088,244.25/12,791.03
6. Step 6: Final answer
   x = 10,326.63