Finding the Fourth Proportional to 10,065.52, 13,890.35 and 5,528.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.52 : 13,890.35 = 5,528.26 : x
2. Step 2: Convert to fraction form
   10,065.52/13,890.35 = 5,528.26/x
3. Step 3: Cross multiply
   10,065.52x = 13,890.35 × 5,528.26
4. Step 4: Simplify right side
   10,065.52x = 76,789,466.29
5. Step 5: Solve for x
   x = 76,789,466.29/10,065.52
6. Step 6: Final answer
   x = 7,628.96