Finding the Fourth Proportional to 3,531.34, 5,291.37 and 2,870.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,531.34 : 5,291.37 = 2,870.01 : x
2. Step 2: Convert to fraction form
   3,531.34/5,291.37 = 2,870.01/x
3. Step 3: Cross multiply
   3,531.34x = 5,291.37 × 2,870.01
4. Step 4: Simplify right side
   3,531.34x = 15,186,284.81
5. Step 5: Solve for x
   x = 15,186,284.81/3,531.34
6. Step 6: Final answer
   x = 4,300.43