Finding the Fourth Proportional to 12,999.77, 19,501.69 and 5,606.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,999.77 : 19,501.69 = 5,606.33 : x
2. Step 2: Convert to fraction form
   12,999.77/19,501.69 = 5,606.33/x
3. Step 3: Cross multiply
   12,999.77x = 19,501.69 × 5,606.33
4. Step 4: Simplify right side
   12,999.77x = 109,332,909.70
5. Step 5: Solve for x
   x = 109,332,909.70/12,999.77
6. Step 6: Final answer
   x = 8,410.37