Finding the Fourth Proportional to 13,169.59, 19,751.46 and 3,807.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,169.59 : 19,751.46 = 3,807.57 : x
2. Step 2: Convert to fraction form
   13,169.59/19,751.46 = 3,807.57/x
3. Step 3: Cross multiply
   13,169.59x = 19,751.46 × 3,807.57
4. Step 4: Simplify right side
   13,169.59x = 75,205,066.55
5. Step 5: Solve for x
   x = 75,205,066.55/13,169.59
6. Step 6: Final answer
   x = 5,710.51