Finding the Fourth Proportional to 13,078.35, 18,048.20 and 7,701.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.35 : 18,048.20 = 7,701.02 : x
2. Step 2: Convert to fraction form
   13,078.35/18,048.20 = 7,701.02/x
3. Step 3: Cross multiply
   13,078.35x = 18,048.20 × 7,701.02
4. Step 4: Simplify right side
   13,078.35x = 138,989,488.10
5. Step 5: Solve for x
   x = 138,989,488.10/13,078.35
6. Step 6: Final answer
   x = 10,627.45