Finding the Fourth Proportional to 4,740.23, 7,111.52 and 2,142.47

Step by Step Solution

1. Step 1: Write the proportion equation
   4,740.23 : 7,111.52 = 2,142.47 : x
2. Step 2: Convert to fraction form
   4,740.23/7,111.52 = 2,142.47/x
3. Step 3: Cross multiply
   4,740.23x = 7,111.52 × 2,142.47
4. Step 4: Simplify right side
   4,740.23x = 15,236,171.98
5. Step 5: Solve for x
   x = 15,236,171.98/4,740.23
6. Step 6: Final answer
   x = 3,214.23