Finding the Fourth Proportional to 3,384.72, 4,670.16 and 2,142

Step by Step Solution

1. Step 1: Write the proportion equation
   3,384.72 : 4,670.16 = 2,142 : x
2. Step 2: Convert to fraction form
   3,384.72/4,670.16 = 2,142/x
3. Step 3: Cross multiply
   3,384.72x = 4,670.16 × 2,142
4. Step 4: Simplify right side
   3,384.72x = 10,003,482.72
5. Step 5: Solve for x
   x = 10,003,482.72/3,384.72
6. Step 6: Final answer
   x = 2,955.48