Finding the Fourth Proportional to 13,001.82, 17,942.20 and 7,696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,001.82 : 17,942.20 = 7,696.72 : x
2. Step 2: Convert to fraction form
   13,001.82/17,942.20 = 7,696.72/x
3. Step 3: Cross multiply
   13,001.82x = 17,942.20 × 7,696.72
4. Step 4: Simplify right side
   13,001.82x = 138,096,089.58
5. Step 5: Solve for x
   x = 138,096,089.58/13,001.82
6. Step 6: Final answer
   x = 10,621.29