Finding the Fourth Proportional to 10,012.09, 13,815.63 and 5,535.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012.09 : 13,815.63 = 5,535.12 : x
2. Step 2: Convert to fraction form
   10,012.09/13,815.63 = 5,535.12/x
3. Step 3: Cross multiply
   10,012.09x = 13,815.63 × 5,535.12
4. Step 4: Simplify right side
   10,012.09x = 76,471,169.93
5. Step 5: Solve for x
   x = 76,471,169.93/10,012.09
6. Step 6: Final answer
   x = 7,637.88