Finding the Fourth Proportional to 10,415.72, 14,358.72 and 7,426.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,415.72 : 14,358.72 = 7,426.35 : x
2. Step 2: Convert to fraction form
   10,415.72/14,358.72 = 7,426.35/x
3. Step 3: Cross multiply
   10,415.72x = 14,358.72 × 7,426.35
4. Step 4: Simplify right side
   10,415.72x = 106,632,880.27
5. Step 5: Solve for x
   x = 106,632,880.27/10,415.72
6. Step 6: Final answer
   x = 10,237.69