Finding the Fourth Proportional to 12,999.67, 19,501.53 and 5,606.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,999.67 : 19,501.53 = 5,606.20 : x
2. Step 2: Convert to fraction form
   12,999.67/19,501.53 = 5,606.20/x
3. Step 3: Cross multiply
   12,999.67x = 19,501.53 × 5,606.20
4. Step 4: Simplify right side
   12,999.67x = 109,329,477.49
5. Step 5: Solve for x
   x = 109,329,477.49/12,999.67
6. Step 6: Final answer
   x = 8,410.17