Finding the Fourth Proportional to 9,938.26, 14,904.78 and 5,251.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938.26 : 14,904.78 = 5,251.96 : x
2. Step 2: Convert to fraction form
   9,938.26/14,904.78 = 5,251.96/x
3. Step 3: Cross multiply
   9,938.26x = 14,904.78 × 5,251.96
4. Step 4: Simplify right side
   9,938.26x = 78,279,308.37
5. Step 5: Solve for x
   x = 78,279,308.37/9,938.26
6. Step 6: Final answer
   x = 7,876.56