Finding the Fourth Proportional to 10,012.20, 13,815.61 and 5,535.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012.20 : 13,815.61 = 5,535.33 : x
2. Step 2: Convert to fraction form
   10,012.20/13,815.61 = 5,535.33/x
3. Step 3: Cross multiply
   10,012.20x = 13,815.61 × 5,535.33
4. Step 4: Simplify right side
   10,012.20x = 76,473,925.99
5. Step 5: Solve for x
   x = 76,473,925.99/10,012.20
6. Step 6: Final answer
   x = 7,638.08