Finding the Fourth Proportional to 9,865.50, 14,805.56 and 4,671.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865.50 : 14,805.56 = 4,671.39 : x
2. Step 2: Convert to fraction form
   9,865.50/14,805.56 = 4,671.39/x
3. Step 3: Cross multiply
   9,865.50x = 14,805.56 × 4,671.39
4. Step 4: Simplify right side
   9,865.50x = 69,162,521.57
5. Step 5: Solve for x
   x = 69,162,521.57/9,865.50
6. Step 6: Final answer
   x = 7,010.54