Finding the Fourth Proportional to 8,870.29, 12,240.01 and 4,890.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.29 : 12,240.01 = 4,890.63 : x
2. Step 2: Convert to fraction form
   8,870.29/12,240.01 = 4,890.63/x
3. Step 3: Cross multiply
   8,870.29x = 12,240.01 × 4,890.63
4. Step 4: Simplify right side
   8,870.29x = 59,861,360.11
5. Step 5: Solve for x
   x = 59,861,360.11/8,870.29
6. Step 6: Final answer
   x = 6,748.52