Finding the Fourth Proportional to 11,820.06, 16,311.71 and 6,442.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,820.06 : 16,311.71 = 6,442.54 : x
2. Step 2: Convert to fraction form
   11,820.06/16,311.71 = 6,442.54/x
3. Step 3: Cross multiply
   11,820.06x = 16,311.71 × 6,442.54
4. Step 4: Simplify right side
   11,820.06x = 105,088,819.47
5. Step 5: Solve for x
   x = 105,088,819.47/11,820.06
6. Step 6: Final answer
   x = 8,890.72