Finding the Fourth Proportional to 35,040.50, 52,568.43 and 13,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,040.50 : 52,568.43 = 13,152.50 : x
2. Step 2: Convert to fraction form
   35,040.50/52,568.43 = 13,152.50/x
3. Step 3: Cross multiply
   35,040.50x = 52,568.43 × 13,152.50
4. Step 4: Simplify right side
   35,040.50x = 691,406,275.58
5. Step 5: Solve for x
   x = 691,406,275.58/35,040.50
6. Step 6: Final answer
   x = 19,731.63