Finding the Fourth Proportional to 13,307.76, 18,364.59 and 7,339.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,307.76 : 18,364.59 = 7,339.48 : x
2. Step 2: Convert to fraction form
   13,307.76/18,364.59 = 7,339.48/x
3. Step 3: Cross multiply
   13,307.76x = 18,364.59 × 7,339.48
4. Step 4: Simplify right side
   13,307.76x = 134,786,495.10
5. Step 5: Solve for x
   x = 134,786,495.10/13,307.76
6. Step 6: Final answer
   x = 10,128.41