Finding the Fourth Proportional to 3,803.78, 5,250.15 and 2,312.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,803.78 : 5,250.15 = 2,312.69 : x
2. Step 2: Convert to fraction form
   3,803.78/5,250.15 = 2,312.69/x
3. Step 3: Cross multiply
   3,803.78x = 5,250.15 × 2,312.69
4. Step 4: Simplify right side
   3,803.78x = 12,141,969.40
5. Step 5: Solve for x
   x = 12,141,969.40/3,803.78
6. Step 6: Final answer
   x = 3,192.08