Finding the Fourth Proportional to 8,994.79, 12,409.52 and 5,637.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,994.79 : 12,409.52 = 5,637.74 : x
2. Step 2: Convert to fraction form
   8,994.79/12,409.52 = 5,637.74/x
3. Step 3: Cross multiply
   8,994.79x = 12,409.52 × 5,637.74
4. Step 4: Simplify right side
   8,994.79x = 69,961,692.40
5. Step 5: Solve for x
   x = 69,961,692.40/8,994.79
6. Step 6: Final answer
   x = 7,778.03