Finding the Fourth Proportional to 28,065.12, 42,075.48 and 10,533

Step by Step Solution

1. Step 1: Write the proportion equation
   28,065.12 : 42,075.48 = 10,533 : x
2. Step 2: Convert to fraction form
   28,065.12/42,075.48 = 10,533/x
3. Step 3: Cross multiply
   28,065.12x = 42,075.48 × 10,533
4. Step 4: Simplify right side
   28,065.12x = 443,181,030.84
5. Step 5: Solve for x
   x = 443,181,030.84/28,065.12
6. Step 6: Final answer
   x = 15,791.17