Finding the Fourth Proportional to 13,053.79, 19,583.72 and 4,288.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,053.79 : 19,583.72 = 4,288.17 : x
2. Step 2: Convert to fraction form
   13,053.79/19,583.72 = 4,288.17/x
3. Step 3: Cross multiply
   13,053.79x = 19,583.72 × 4,288.17
4. Step 4: Simplify right side
   13,053.79x = 83,978,299.15
5. Step 5: Solve for x
   x = 83,978,299.15/13,053.79
6. Step 6: Final answer
   x = 6,433.25