Finding the Fourth Proportional to 8,990.16, 12,405.98 and 5,010.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,990.16 : 12,405.98 = 5,010.54 : x
2. Step 2: Convert to fraction form
   8,990.16/12,405.98 = 5,010.54/x
3. Step 3: Cross multiply
   8,990.16x = 12,405.98 × 5,010.54
4. Step 4: Simplify right side
   8,990.16x = 62,160,659.03
5. Step 5: Solve for x
   x = 62,160,659.03/8,990.16
6. Step 6: Final answer
   x = 6,914.30