Finding the Fourth Proportional to 10,956.79, 16,435.05 and 10,425.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.79 : 16,435.05 = 10,425.52 : x
2. Step 2: Convert to fraction form
   10,956.79/16,435.05 = 10,425.52/x
3. Step 3: Cross multiply
   10,956.79x = 16,435.05 × 10,425.52
4. Step 4: Simplify right side
   10,956.79x = 171,343,942.48
5. Step 5: Solve for x
   x = 171,343,942.48/10,956.79
6. Step 6: Final answer
   x = 15,638.15