Finding the Fourth Proportional to 8,263.10, 12,384.12 and 3,870.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,263.10 : 12,384.12 = 3,870.88 : x
2. Step 2: Convert to fraction form
   8,263.10/12,384.12 = 3,870.88/x
3. Step 3: Cross multiply
   8,263.10x = 12,384.12 × 3,870.88
4. Step 4: Simplify right side
   8,263.10x = 47,937,425.98
5. Step 5: Solve for x
   x = 47,937,425.98/8,263.10
6. Step 6: Final answer
   x = 5,801.38