Finding the Fourth Proportional to 3,985.05, 5,492.28 and 3,526.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.05 : 5,492.28 = 3,526.77 : x
2. Step 2: Convert to fraction form
   3,985.05/5,492.28 = 3,526.77/x
3. Step 3: Cross multiply
   3,985.05x = 5,492.28 × 3,526.77
4. Step 4: Simplify right side
   3,985.05x = 19,370,008.34
5. Step 5: Solve for x
   x = 19,370,008.34/3,985.05
6. Step 6: Final answer
   x = 4,860.67