Finding the Fourth Proportional to 15,618.18, 21,562 and 10,328.34

Step by Step Solution

1. Step 1: Write the proportion equation
   15,618.18 : 21,562 = 10,328.34 : x
2. Step 2: Convert to fraction form
   15,618.18/21,562 = 10,328.34/x
3. Step 3: Cross multiply
   15,618.18x = 21,562 × 10,328.34
4. Step 4: Simplify right side
   15,618.18x = 222,699,667.08
5. Step 5: Solve for x
   x = 222,699,667.08/15,618.18
6. Step 6: Final answer
   x = 14,259.00