Finding the Fourth Proportional to 12,601.55, 17,389.32 and 7,223.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,601.55 : 17,389.32 = 7,223.92 : x
2. Step 2: Convert to fraction form
   12,601.55/17,389.32 = 7,223.92/x
3. Step 3: Cross multiply
   12,601.55x = 17,389.32 × 7,223.92
4. Step 4: Simplify right side
   12,601.55x = 125,619,089.81
5. Step 5: Solve for x
   x = 125,619,089.81/12,601.55
6. Step 6: Final answer
   x = 9,968.54