Finding the Fourth Proportional to 11,321.06, 16,978.35 and 3,527.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,321.06 : 16,978.35 = 3,527.78 : x
2. Step 2: Convert to fraction form
   11,321.06/16,978.35 = 3,527.78/x
3. Step 3: Cross multiply
   11,321.06x = 16,978.35 × 3,527.78
4. Step 4: Simplify right side
   11,321.06x = 59,895,883.56
5. Step 5: Solve for x
   x = 59,895,883.56/11,321.06
6. Step 6: Final answer
   x = 5,290.66