Finding the Fourth Proportional to 7,142.17, 10,707.58 and 2,979.58

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.17 : 10,707.58 = 2,979.58 : x
2. Step 2: Convert to fraction form
   7,142.17/10,707.58 = 2,979.58/x
3. Step 3: Cross multiply
   7,142.17x = 10,707.58 × 2,979.58
4. Step 4: Simplify right side
   7,142.17x = 31,904,091.22
5. Step 5: Solve for x
   x = 31,904,091.22/7,142.17
6. Step 6: Final answer
   x = 4,467.00