Finding the Fourth Proportional to 9,909, 14,870.52 and 4,715.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909 : 14,870.52 = 4,715.28 : x
2. Step 2: Convert to fraction form
   9,909/14,870.52 = 4,715.28/x
3. Step 3: Cross multiply
   9,909x = 14,870.52 × 4,715.28
4. Step 4: Simplify right side
   9,909x = 70,118,665.55
5. Step 5: Solve for x
   x = 70,118,665.55/9,909
6. Step 6: Final answer
   x = 7,076.26