Finding the Fourth Proportional to 10,011.15, 13,815.18 and 5,535.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,011.15 : 13,815.18 = 5,535.09 : x
2. Step 2: Convert to fraction form
   10,011.15/13,815.18 = 5,535.09/x
3. Step 3: Cross multiply
   10,011.15x = 13,815.18 × 5,535.09
4. Step 4: Simplify right side
   10,011.15x = 76,468,264.67
5. Step 5: Solve for x
   x = 76,468,264.67/10,011.15
6. Step 6: Final answer
   x = 7,638.31