Finding the Fourth Proportional to 10,953.60, 16,426.32 and 3,931.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,953.60 : 16,426.32 = 3,931.60 : x
2. Step 2: Convert to fraction form
   10,953.60/16,426.32 = 3,931.60/x
3. Step 3: Cross multiply
   10,953.60x = 16,426.32 × 3,931.60
4. Step 4: Simplify right side
   10,953.60x = 64,581,719.71
5. Step 5: Solve for x
   x = 64,581,719.71/10,953.60
6. Step 6: Final answer
   x = 5,895.94