Finding the Fourth Proportional to 10,279.39, 15,406.69 and 4,725.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,279.39 : 15,406.69 = 4,725.12 : x
2. Step 2: Convert to fraction form
   10,279.39/15,406.69 = 4,725.12/x
3. Step 3: Cross multiply
   10,279.39x = 15,406.69 × 4,725.12
4. Step 4: Simplify right side
   10,279.39x = 72,798,459.05
5. Step 5: Solve for x
   x = 72,798,459.05/10,279.39
6. Step 6: Final answer
   x = 7,081.98