Finding the Fourth Proportional to 10,272.38, 15,406.89 and 4,725.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,272.38 : 15,406.89 = 4,725.50 : x
2. Step 2: Convert to fraction form
   10,272.38/15,406.89 = 4,725.50/x
3. Step 3: Cross multiply
   10,272.38x = 15,406.89 × 4,725.50
4. Step 4: Simplify right side
   10,272.38x = 72,805,258.70
5. Step 5: Solve for x
   x = 72,805,258.70/10,272.38
6. Step 6: Final answer
   x = 7,087.48