Finding the Fourth Proportional to 11,319.42, 16,978.32 and 3,528

Step by Step Solution

1. Step 1: Write the proportion equation
   11,319.42 : 16,978.32 = 3,528 : x
2. Step 2: Convert to fraction form
   11,319.42/16,978.32 = 3,528/x
3. Step 3: Cross multiply
   11,319.42x = 16,978.32 × 3,528
4. Step 4: Simplify right side
   11,319.42x = 59,899,512.96
5. Step 5: Solve for x
   x = 59,899,512.96/11,319.42
6. Step 6: Final answer
   x = 5,291.75