Finding the Fourth Proportional to 10,072.38, 13,900.32 and 5,596.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,072.38 : 13,900.32 = 5,596.12 : x
2. Step 2: Convert to fraction form
   10,072.38/13,900.32 = 5,596.12/x
3. Step 3: Cross multiply
   10,072.38x = 13,900.32 × 5,596.12
4. Step 4: Simplify right side
   10,072.38x = 77,787,858.76
5. Step 5: Solve for x
   x = 77,787,858.76/10,072.38
6. Step 6: Final answer
   x = 7,722.89