Finding the Fourth Proportional to 13,007.60, 19,513.83 and 4,122.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.60 : 19,513.83 = 4,122.56 : x
2. Step 2: Convert to fraction form
   13,007.60/19,513.83 = 4,122.56/x
3. Step 3: Cross multiply
   13,007.60x = 19,513.83 × 4,122.56
4. Step 4: Simplify right side
   13,007.60x = 80,446,935.00
5. Step 5: Solve for x
   x = 80,446,935.00/13,007.60
6. Step 6: Final answer
   x = 6,184.61