Finding the Fourth Proportional to 9,781.26, 13,498.06 and 5,305

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781.26 : 13,498.06 = 5,305 : x
2. Step 2: Convert to fraction form
   9,781.26/13,498.06 = 5,305/x
3. Step 3: Cross multiply
   9,781.26x = 13,498.06 × 5,305
4. Step 4: Simplify right side
   9,781.26x = 71,607,208.30
5. Step 5: Solve for x
   x = 71,607,208.30/9,781.26
6. Step 6: Final answer
   x = 7,320.86