Finding the Fourth Proportional to 3,870.76, 5,331.82 and 3,602.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.76 : 5,331.82 = 3,602.55 : x
2. Step 2: Convert to fraction form
   3,870.76/5,331.82 = 3,602.55/x
3. Step 3: Cross multiply
   3,870.76x = 5,331.82 × 3,602.55
4. Step 4: Simplify right side
   3,870.76x = 19,208,148.14
5. Step 5: Solve for x
   x = 19,208,148.14/3,870.76
6. Step 6: Final answer
   x = 4,962.37