Finding the Fourth Proportional to 2,810.72, 4,213.36 and 2,570.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.72 : 4,213.36 = 2,570.16 : x
2. Step 2: Convert to fraction form
   2,810.72/4,213.36 = 2,570.16/x
3. Step 3: Cross multiply
   2,810.72x = 4,213.36 × 2,570.16
4. Step 4: Simplify right side
   2,810.72x = 10,829,009.34
5. Step 5: Solve for x
   x = 10,829,009.34/2,810.72
6. Step 6: Final answer
   x = 3,852.75