Finding the Fourth Proportional to 12,575.62, 18,866.22 and 4,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,575.62 : 18,866.22 = 4,784.50 : x
2. Step 2: Convert to fraction form
   12,575.62/18,866.22 = 4,784.50/x
3. Step 3: Cross multiply
   12,575.62x = 18,866.22 × 4,784.50
4. Step 4: Simplify right side
   12,575.62x = 90,265,429.59
5. Step 5: Solve for x
   x = 90,265,429.59/12,575.62
6. Step 6: Final answer
   x = 7,177.81