Finding the Fourth Proportional to 5,005.52, 6,905.00 and 3,116.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,005.52 : 6,905.00 = 3,116.80 : x
2. Step 2: Convert to fraction form
   5,005.52/6,905.00 = 3,116.80/x
3. Step 3: Cross multiply
   5,005.52x = 6,905.00 × 3,116.80
4. Step 4: Simplify right side
   5,005.52x = 21,521,453.89
5. Step 5: Solve for x
   x = 21,521,453.89/5,005.52
6. Step 6: Final answer
   x = 4,299.55