Finding the Fourth Proportional to 12,573.01, 18,859.72 and 3,807.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,573.01 : 18,859.72 = 3,807.60 : x
2. Step 2: Convert to fraction form
   12,573.01/18,859.72 = 3,807.60/x
3. Step 3: Cross multiply
   12,573.01x = 18,859.72 × 3,807.60
4. Step 4: Simplify right side
   12,573.01x = 71,810,269.87
5. Step 5: Solve for x
   x = 71,810,269.87/12,573.01
6. Step 6: Final answer
   x = 5,711.46