Finding the Fourth Proportional to 3,528.21, 5,291.81 and 2,470.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,528.21 : 5,291.81 = 2,470.82 : x
2. Step 2: Convert to fraction form
   3,528.21/5,291.81 = 2,470.82/x
3. Step 3: Cross multiply
   3,528.21x = 5,291.81 × 2,470.82
4. Step 4: Simplify right side
   3,528.21x = 13,075,071.17
5. Step 5: Solve for x
   x = 13,075,071.17/3,528.21
6. Step 6: Final answer
   x = 3,705.87