Finding the Fourth Proportional to 8,868.74, 12,238.72 and 4,890.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.74 : 12,238.72 = 4,890.12 : x
2. Step 2: Convert to fraction form
   8,868.74/12,238.72 = 4,890.12/x
3. Step 3: Cross multiply
   8,868.74x = 12,238.72 × 4,890.12
4. Step 4: Simplify right side
   8,868.74x = 59,848,809.45
5. Step 5: Solve for x
   x = 59,848,809.45/8,868.74
6. Step 6: Final answer
   x = 6,748.29