Finding the Fourth Proportional to 11,743.72, 17,616.20 and 2,978.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,743.72 : 17,616.20 = 2,978.71 : x
2. Step 2: Convert to fraction form
   11,743.72/17,616.20 = 2,978.71/x
3. Step 3: Cross multiply
   11,743.72x = 17,616.20 × 2,978.71
4. Step 4: Simplify right side
   11,743.72x = 52,473,492.17
5. Step 5: Solve for x
   x = 52,473,492.17/11,743.72
6. Step 6: Final answer
   x = 4,468.22