Finding the Fourth Proportional to 10,009.80, 14,994.20 and 5,618.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,009.80 : 14,994.20 = 5,618.04 : x
2. Step 2: Convert to fraction form
   10,009.80/14,994.20 = 5,618.04/x
3. Step 3: Cross multiply
   10,009.80x = 14,994.20 × 5,618.04
4. Step 4: Simplify right side
   10,009.80x = 84,238,015.37
5. Step 5: Solve for x
   x = 84,238,015.37/10,009.80
6. Step 6: Final answer
   x = 8,415.55