Finding the Fourth Proportional to 39,477.69, 59,225.83 and 12,823.60

Step by Step Solution

1. Step 1: Write the proportion equation
   39,477.69 : 59,225.83 = 12,823.60 : x
2. Step 2: Convert to fraction form
   39,477.69/59,225.83 = 12,823.60/x
3. Step 3: Cross multiply
   39,477.69x = 59,225.83 × 12,823.60
4. Step 4: Simplify right side
   39,477.69x = 759,488,057.46
5. Step 5: Solve for x
   x = 759,488,057.46/39,477.69
6. Step 6: Final answer
   x = 19,238.41