Finding the Fourth Proportional to 22,995.57, 31,728.35 and 13,430.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,995.57 : 31,728.35 = 13,430.03 : x
2. Step 2: Convert to fraction form
   22,995.57/31,728.35 = 13,430.03/x
3. Step 3: Cross multiply
   22,995.57x = 31,728.35 × 13,430.03
4. Step 4: Simplify right side
   22,995.57x = 426,112,692.35
5. Step 5: Solve for x
   x = 426,112,692.35/22,995.57
6. Step 6: Final answer
   x = 18,530.21