Finding the Fourth Proportional to 11,104.74, 15,323.06 and 7,131.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,104.74 : 15,323.06 = 7,131.23 : x
2. Step 2: Convert to fraction form
   11,104.74/15,323.06 = 7,131.23/x
3. Step 3: Cross multiply
   11,104.74x = 15,323.06 × 7,131.23
4. Step 4: Simplify right side
   11,104.74x = 109,272,266.82
5. Step 5: Solve for x
   x = 109,272,266.82/11,104.74
6. Step 6: Final answer
   x = 9,840.15