Finding the Fourth Proportional to 13,827.34, 19,080.85 and 9,118.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,827.34 : 19,080.85 = 9,118.00 : x
2. Step 2: Convert to fraction form
   13,827.34/19,080.85 = 9,118.00/x
3. Step 3: Cross multiply
   13,827.34x = 19,080.85 × 9,118.00
4. Step 4: Simplify right side
   13,827.34x = 173,979,049.31
5. Step 5: Solve for x
   x = 173,979,049.31/13,827.34
6. Step 6: Final answer
   x = 12,582.25