Finding the Fourth Proportional to 12,849, 17,731.74 and 7,543.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,849 : 17,731.74 = 7,543.89 : x
2. Step 2: Convert to fraction form
   12,849/17,731.74 = 7,543.89/x
3. Step 3: Cross multiply
   12,849x = 17,731.74 × 7,543.89
4. Step 4: Simplify right side
   12,849x = 133,766,296.07
5. Step 5: Solve for x
   x = 133,766,296.07/12,849
6. Step 6: Final answer
   x = 10,410.64