Finding the Fourth Proportional to 12,843.18, 17,719.83 and 7,538.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.18 : 17,719.83 = 7,538.22 : x
2. Step 2: Convert to fraction form
   12,843.18/17,719.83 = 7,538.22/x
3. Step 3: Cross multiply
   12,843.18x = 17,719.83 × 7,538.22
4. Step 4: Simplify right side
   12,843.18x = 133,575,976.90
5. Step 5: Solve for x
   x = 133,575,976.90/12,843.18
6. Step 6: Final answer
   x = 10,400.54