Finding the Fourth Proportional to 10,905.85, 16,364.94 and 4,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.85 : 16,364.94 = 4,665.30 : x
2. Step 2: Convert to fraction form
   10,905.85/16,364.94 = 4,665.30/x
3. Step 3: Cross multiply
   10,905.85x = 16,364.94 × 4,665.30
4. Step 4: Simplify right side
   10,905.85x = 76,347,394.01
5. Step 5: Solve for x
   x = 76,347,394.01/10,905.85
6. Step 6: Final answer
   x = 7,000.59