Finding the Fourth Proportional to 12,946.29, 17,864.43 and 7,280.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,946.29 : 17,864.43 = 7,280.91 : x
2. Step 2: Convert to fraction form
   12,946.29/17,864.43 = 7,280.91/x
3. Step 3: Cross multiply
   12,946.29x = 17,864.43 × 7,280.91
4. Step 4: Simplify right side
   12,946.29x = 130,069,346.72
5. Step 5: Solve for x
   x = 130,069,346.72/12,946.29
6. Step 6: Final answer
   x = 10,046.84