Finding the Fourth Proportional to 13,112.04, 18,094.52 and 7,143.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.04 : 18,094.52 = 7,143.69 : x
2. Step 2: Convert to fraction form
   13,112.04/18,094.52 = 7,143.69/x
3. Step 3: Cross multiply
   13,112.04x = 18,094.52 × 7,143.69
4. Step 4: Simplify right side
   13,112.04x = 129,261,605.86
5. Step 5: Solve for x
   x = 129,261,605.86/13,112.04
6. Step 6: Final answer
   x = 9,858.24