Finding the Fourth Proportional to 12,178.08, 18,265.59 and 5,160.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,178.08 : 18,265.59 = 5,160.89 : x
2. Step 2: Convert to fraction form
   12,178.08/18,265.59 = 5,160.89/x
3. Step 3: Cross multiply
   12,178.08x = 18,265.59 × 5,160.89
4. Step 4: Simplify right side
   12,178.08x = 94,266,746.44
5. Step 5: Solve for x
   x = 94,266,746.44/12,178.08
6. Step 6: Final answer
   x = 7,740.69