Finding the Fourth Proportional to 13,079.77, 18,051.59 and 7,774.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,079.77 : 18,051.59 = 7,774.54 : x
2. Step 2: Convert to fraction form
   13,079.77/18,051.59 = 7,774.54/x
3. Step 3: Cross multiply
   13,079.77x = 18,051.59 × 7,774.54
4. Step 4: Simplify right side
   13,079.77x = 140,342,782.83
5. Step 5: Solve for x
   x = 140,342,782.83/13,079.77
6. Step 6: Final answer
   x = 10,729.76