Finding the Fourth Proportional to 10,260.38, 15,378.42 and 4,709.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,260.38 : 15,378.42 = 4,709.05 : x
2. Step 2: Convert to fraction form
   10,260.38/15,378.42 = 4,709.05/x
3. Step 3: Cross multiply
   10,260.38x = 15,378.42 × 4,709.05
4. Step 4: Simplify right side
   10,260.38x = 72,417,671.81
5. Step 5: Solve for x
   x = 72,417,671.81/10,260.38
6. Step 6: Final answer
   x = 7,057.99