Finding the Fourth Proportional to 10,072.32, 15,107.24 and 5,145.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,072.32 : 15,107.24 = 5,145.52 : x
2. Step 2: Convert to fraction form
   10,072.32/15,107.24 = 5,145.52/x
3. Step 3: Cross multiply
   10,072.32x = 15,107.24 × 5,145.52
4. Step 4: Simplify right side
   10,072.32x = 77,734,605.56
5. Step 5: Solve for x
   x = 77,734,605.56/10,072.32
6. Step 6: Final answer
   x = 7,717.65