Finding the Fourth Proportional to 12,946.93, 17,866.25 and 7,643.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,946.93 : 17,866.25 = 7,643.46 : x
2. Step 2: Convert to fraction form
   12,946.93/17,866.25 = 7,643.46/x
3. Step 3: Cross multiply
   12,946.93x = 17,866.25 × 7,643.46
4. Step 4: Simplify right side
   12,946.93x = 136,559,941.67
5. Step 5: Solve for x
   x = 136,559,941.67/12,946.93
6. Step 6: Final answer
   x = 10,547.67