Finding the Fourth Proportional to 11,920.54, 17,870.18 and 4,519.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,920.54 : 17,870.18 = 4,519.98 : x
2. Step 2: Convert to fraction form
   11,920.54/17,870.18 = 4,519.98/x
3. Step 3: Cross multiply
   11,920.54x = 17,870.18 × 4,519.98
4. Step 4: Simplify right side
   11,920.54x = 80,772,856.20
5. Step 5: Solve for x
   x = 80,772,856.20/11,920.54
6. Step 6: Final answer
   x = 6,775.94