Finding the Fourth Proportional to 13,256.81, 18,294.46 and 7,288.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.81 : 18,294.46 = 7,288.86 : x
2. Step 2: Convert to fraction form
   13,256.81/18,294.46 = 7,288.86/x
3. Step 3: Cross multiply
   13,256.81x = 18,294.46 × 7,288.86
4. Step 4: Simplify right side
   13,256.81x = 133,345,802.77
5. Step 5: Solve for x
   x = 133,345,802.77/13,256.81
6. Step 6: Final answer
   x = 10,058.67