Finding the Fourth Proportional to 11,818.23, 17,696.04 and 7,131.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818.23 : 17,696.04 = 7,131.99 : x
2. Step 2: Convert to fraction form
   11,818.23/17,696.04 = 7,131.99/x
3. Step 3: Cross multiply
   11,818.23x = 17,696.04 × 7,131.99
4. Step 4: Simplify right side
   11,818.23x = 126,207,980.32
5. Step 5: Solve for x
   x = 126,207,980.32/11,818.23
6. Step 6: Final answer
   x = 10,679.09