Finding the Fourth Proportional to 13,005.39, 17,946.14 and 7,339.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,005.39 : 17,946.14 = 7,339.81 : x
2. Step 2: Convert to fraction form
   13,005.39/17,946.14 = 7,339.81/x
3. Step 3: Cross multiply
   13,005.39x = 17,946.14 × 7,339.81
4. Step 4: Simplify right side
   13,005.39x = 131,721,200.73
5. Step 5: Solve for x
   x = 131,721,200.73/13,005.39
6. Step 6: Final answer
   x = 10,128.20