Finding the Fourth Proportional to 22,178.64, 33,280.72 and 12,317.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178.64 : 33,280.72 = 12,317.10 : x
2. Step 2: Convert to fraction form
   22,178.64/33,280.72 = 12,317.10/x
3. Step 3: Cross multiply
   22,178.64x = 33,280.72 × 12,317.10
4. Step 4: Simplify right side
   22,178.64x = 409,921,870.00
5. Step 5: Solve for x
   x = 409,921,870.00/22,178.64
6. Step 6: Final answer
   x = 18,482.73