Finding the Fourth Proportional to 13,013.23, 17,957.86 and 7,347.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.23 : 17,957.86 = 7,347.89 : x
2. Step 2: Convert to fraction form
   13,013.23/17,957.86 = 7,347.89/x
3. Step 3: Cross multiply
   13,013.23x = 17,957.86 × 7,347.89
4. Step 4: Simplify right side
   13,013.23x = 131,952,379.92
5. Step 5: Solve for x
   x = 131,952,379.92/13,013.23
6. Step 6: Final answer
   x = 10,139.86