Finding the Fourth Proportional to 12,880.71, 19,321.37 and 7,294.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,880.71 : 19,321.37 = 7,294.14 : x
2. Step 2: Convert to fraction form
   12,880.71/19,321.37 = 7,294.14/x
3. Step 3: Cross multiply
   12,880.71x = 19,321.37 × 7,294.14
4. Step 4: Simplify right side
   12,880.71x = 140,932,741.30
5. Step 5: Solve for x
   x = 140,932,741.30/12,880.71
6. Step 6: Final answer
   x = 10,941.38