Finding the Fourth Proportional to 12,930.08, 19,365.96 and 5,990

Step by Step Solution

1. Step 1: Write the proportion equation
   12,930.08 : 19,365.96 = 5,990 : x
2. Step 2: Convert to fraction form
   12,930.08/19,365.96 = 5,990/x
3. Step 3: Cross multiply
   12,930.08x = 19,365.96 × 5,990
4. Step 4: Simplify right side
   12,930.08x = 116,002,100.40
5. Step 5: Solve for x
   x = 116,002,100.40/12,930.08
6. Step 6: Final answer
   x = 8,971.49