Finding the Fourth Proportional to 12,068.52, 18,088.20 and 5,485.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,068.52 : 18,088.20 = 5,485.68 : x
2. Step 2: Convert to fraction form
   12,068.52/18,088.20 = 5,485.68/x
3. Step 3: Cross multiply
   12,068.52x = 18,088.20 × 5,485.68
4. Step 4: Simplify right side
   12,068.52x = 99,226,076.98
5. Step 5: Solve for x
   x = 99,226,076.98/12,068.52
6. Step 6: Final answer
   x = 8,221.89