Finding the Fourth Proportional to 10,215.94, 15,316.30 and 4,294.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.94 : 15,316.30 = 4,294.56 : x
2. Step 2: Convert to fraction form
   10,215.94/15,316.30 = 4,294.56/x
3. Step 3: Cross multiply
   10,215.94x = 15,316.30 × 4,294.56
4. Step 4: Simplify right side
   10,215.94x = 65,776,758.59
5. Step 5: Solve for x
   x = 65,776,758.59/10,215.94
6. Step 6: Final answer
   x = 6,438.64