Finding the Fourth Proportional to 28,564.02, 42,835.23 and 13,768.02

Step by Step Solution

1. Step 1: Write the proportion equation
   28,564.02 : 42,835.23 = 13,768.02 : x
2. Step 2: Convert to fraction form
   28,564.02/42,835.23 = 13,768.02/x
3. Step 3: Cross multiply
   28,564.02x = 42,835.23 × 13,768.02
4. Step 4: Simplify right side
   28,564.02x = 589,756,303.34
5. Step 5: Solve for x
   x = 589,756,303.34/28,564.02
6. Step 6: Final answer
   x = 20,646.82