Finding the Fourth Proportional to 13,109.31, 19,653.57 and 6,868.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.31 : 19,653.57 = 6,868.13 : x
2. Step 2: Convert to fraction form
   13,109.31/19,653.57 = 6,868.13/x
3. Step 3: Cross multiply
   13,109.31x = 19,653.57 × 6,868.13
4. Step 4: Simplify right side
   13,109.31x = 134,983,175.46
5. Step 5: Solve for x
   x = 134,983,175.46/13,109.31
6. Step 6: Final answer
   x = 10,296.74