Finding the Fourth Proportional to 10,931.34, 16,397.73 and 3,140.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,931.34 : 16,397.73 = 3,140.22 : x
2. Step 2: Convert to fraction form
   10,931.34/16,397.73 = 3,140.22/x
3. Step 3: Cross multiply
   10,931.34x = 16,397.73 × 3,140.22
4. Step 4: Simplify right side
   10,931.34x = 51,492,479.70
5. Step 5: Solve for x
   x = 51,492,479.70/10,931.34
6. Step 6: Final answer
   x = 4,710.54