Finding the Fourth Proportional to 28,362.42, 42,525.41 and 13,571.01

Step by Step Solution

1. Step 1: Write the proportion equation
   28,362.42 : 42,525.41 = 13,571.01 : x
2. Step 2: Convert to fraction form
   28,362.42/42,525.41 = 13,571.01/x
3. Step 3: Cross multiply
   28,362.42x = 42,525.41 × 13,571.01
4. Step 4: Simplify right side
   28,362.42x = 577,112,696.51
5. Step 5: Solve for x
   x = 577,112,696.51/28,362.42
6. Step 6: Final answer
   x = 20,347.79