Finding the Fourth Proportional to 20,401.56, 30,598.86 and 5,607

Step by Step Solution

1. Step 1: Write the proportion equation
   20,401.56 : 30,598.86 = 5,607 : x
2. Step 2: Convert to fraction form
   20,401.56/30,598.86 = 5,607/x
3. Step 3: Cross multiply
   20,401.56x = 30,598.86 × 5,607
4. Step 4: Simplify right side
   20,401.56x = 171,567,808.02
5. Step 5: Solve for x
   x = 171,567,808.02/20,401.56
6. Step 6: Final answer
   x = 8,409.54