Finding the Fourth Proportional to 12,599.99, 17,388.71 and 7,223.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,599.99 : 17,388.71 = 7,223.33 : x
2. Step 2: Convert to fraction form
   12,599.99/17,388.71 = 7,223.33/x
3. Step 3: Cross multiply
   12,599.99x = 17,388.71 × 7,223.33
4. Step 4: Simplify right side
   12,599.99x = 125,604,267.54
5. Step 5: Solve for x
   x = 125,604,267.54/12,599.99
6. Step 6: Final answer
   x = 9,968.60