Finding the Fourth Proportional to 10,007.76, 15,012.84 and 3,435.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.76 : 15,012.84 = 3,435.12 : x
2. Step 2: Convert to fraction form
   10,007.76/15,012.84 = 3,435.12/x
3. Step 3: Cross multiply
   10,007.76x = 15,012.84 × 3,435.12
4. Step 4: Simplify right side
   10,007.76x = 51,570,906.94
5. Step 5: Solve for x
   x = 51,570,906.94/10,007.76
6. Step 6: Final answer
   x = 5,153.09