Finding the Fourth Proportional to 8,981.98, 12,394.50 and 5,624.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.98 : 12,394.50 = 5,624.64 : x
2. Step 2: Convert to fraction form
   8,981.98/12,394.50 = 5,624.64/x
3. Step 3: Cross multiply
   8,981.98x = 12,394.50 × 5,624.64
4. Step 4: Simplify right side
   8,981.98x = 69,714,600.48
5. Step 5: Solve for x
   x = 69,714,600.48/8,981.98
6. Step 6: Final answer
   x = 7,761.61