Finding the Fourth Proportional to 12,979.89, 19,477.23 and 5,083.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.89 : 19,477.23 = 5,083.05 : x
2. Step 2: Convert to fraction form
   12,979.89/19,477.23 = 5,083.05/x
3. Step 3: Cross multiply
   12,979.89x = 19,477.23 × 5,083.05
4. Step 4: Simplify right side
   12,979.89x = 99,003,733.95
5. Step 5: Solve for x
   x = 99,003,733.95/12,979.89
6. Step 6: Final answer
   x = 7,627.47