Finding the Fourth Proportional to 10,005.25, 15,007.34 and 5,074.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,005.25 : 15,007.34 = 5,074.77 : x
2. Step 2: Convert to fraction form
   10,005.25/15,007.34 = 5,074.77/x
3. Step 3: Cross multiply
   10,005.25x = 15,007.34 × 5,074.77
4. Step 4: Simplify right side
   10,005.25x = 76,158,717.43
5. Step 5: Solve for x
   x = 76,158,717.43/10,005.25
6. Step 6: Final answer
   x = 7,611.87