Finding the Fourth Proportional to 12,302.83, 18,442.89 and 4,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,302.83 : 18,442.89 = 4,905.50 : x
2. Step 2: Convert to fraction form
   12,302.83/18,442.89 = 4,905.50/x
3. Step 3: Cross multiply
   12,302.83x = 18,442.89 × 4,905.50
4. Step 4: Simplify right side
   12,302.83x = 90,471,596.90
5. Step 5: Solve for x
   x = 90,471,596.90/12,302.83
6. Step 6: Final answer
   x = 7,353.72