Finding the Fourth Proportional to 10,256.31, 15,389.69 and 4,709.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,256.31 : 15,389.69 = 4,709.07 : x
2. Step 2: Convert to fraction form
   10,256.31/15,389.69 = 4,709.07/x
3. Step 3: Cross multiply
   10,256.31x = 15,389.69 × 4,709.07
4. Step 4: Simplify right side
   10,256.31x = 72,471,103.94
5. Step 5: Solve for x
   x = 72,471,103.94/10,256.31
6. Step 6: Final answer
   x = 7,066.00