Finding the Fourth Proportional to 12,946.92, 17,865.06 and 7,357.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,946.92 : 17,865.06 = 7,357.80 : x
2. Step 2: Convert to fraction form
   12,946.92/17,865.06 = 7,357.80/x
3. Step 3: Cross multiply
   12,946.92x = 17,865.06 × 7,357.80
4. Step 4: Simplify right side
   12,946.92x = 131,447,538.47
5. Step 5: Solve for x
   x = 131,447,538.47/12,946.92
6. Step 6: Final answer
   x = 10,152.80