Finding the Fourth Proportional to 10,926.05, 16,385.55 and 3,528.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,926.05 : 16,385.55 = 3,528.78 : x
2. Step 2: Convert to fraction form
   10,926.05/16,385.55 = 3,528.78/x
3. Step 3: Cross multiply
   10,926.05x = 16,385.55 × 3,528.78
4. Step 4: Simplify right side
   10,926.05x = 57,821,001.13
5. Step 5: Solve for x
   x = 57,821,001.13/10,926.05
6. Step 6: Final answer
   x = 5,292.03