Finding the Fourth Proportional to 11,781.69, 17,672.45 and 2,896.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,781.69 : 17,672.45 = 2,896.98 : x
2. Step 2: Convert to fraction form
   11,781.69/17,672.45 = 2,896.98/x
3. Step 3: Cross multiply
   11,781.69x = 17,672.45 × 2,896.98
4. Step 4: Simplify right side
   11,781.69x = 51,196,719.72
5. Step 5: Solve for x
   x = 51,196,719.72/11,781.69
6. Step 6: Final answer
   x = 4,345.45