Finding the Fourth Proportional to 8,999.83, 13,499.31 and 3,155.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,999.83 : 13,499.31 = 3,155.99 : x
2. Step 2: Convert to fraction form
   8,999.83/13,499.31 = 3,155.99/x
3. Step 3: Cross multiply
   8,999.83x = 13,499.31 × 3,155.99
4. Step 4: Simplify right side
   8,999.83x = 42,603,687.37
5. Step 5: Solve for x
   x = 42,603,687.37/8,999.83
6. Step 6: Final answer
   x = 4,733.83