Finding the Fourth Proportional to 12,798.55, 17,663.43 and 7,133.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.55 : 17,663.43 = 7,133.82 : x
2. Step 2: Convert to fraction form
   12,798.55/17,663.43 = 7,133.82/x
3. Step 3: Cross multiply
   12,798.55x = 17,663.43 × 7,133.82
4. Step 4: Simplify right side
   12,798.55x = 126,007,641.89
5. Step 5: Solve for x
   x = 126,007,641.89/12,798.55
6. Step 6: Final answer
   x = 9,845.46