Finding the Fourth Proportional to 8,994.50, 13,490.78 and 2,421.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,994.50 : 13,490.78 = 2,421.35 : x
2. Step 2: Convert to fraction form
   8,994.50/13,490.78 = 2,421.35/x
3. Step 3: Cross multiply
   8,994.50x = 13,490.78 × 2,421.35
4. Step 4: Simplify right side
   8,994.50x = 32,665,820.59
5. Step 5: Solve for x
   x = 32,665,820.59/8,994.50
6. Step 6: Final answer
   x = 3,631.76