Finding the Fourth Proportional to 13,443.94, 18,549.92 and 7,853.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443.94 : 18,549.92 = 7,853.86 : x
2. Step 2: Convert to fraction form
   13,443.94/18,549.92 = 7,853.86/x
3. Step 3: Cross multiply
   13,443.94x = 18,549.92 × 7,853.86
4. Step 4: Simplify right side
   13,443.94x = 145,688,474.69
5. Step 5: Solve for x
   x = 145,688,474.69/13,443.94
6. Step 6: Final answer
   x = 10,836.74