Finding the Fourth Proportional to 5,710.51, 7,875.25 and 3,720.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,710.51 : 7,875.25 = 3,720.34 : x
2. Step 2: Convert to fraction form
   5,710.51/7,875.25 = 3,720.34/x
3. Step 3: Cross multiply
   5,710.51x = 7,875.25 × 3,720.34
4. Step 4: Simplify right side
   5,710.51x = 29,298,607.59
5. Step 5: Solve for x
   x = 29,298,607.59/5,710.51
6. Step 6: Final answer
   x = 5,130.65