Finding the Fourth Proportional to 35,543.50, 53,299.71 and 18,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,543.50 : 53,299.71 = 18,899.50 : x
2. Step 2: Convert to fraction form
   35,543.50/53,299.71 = 18,899.50/x
3. Step 3: Cross multiply
   35,543.50x = 53,299.71 × 18,899.50
4. Step 4: Simplify right side
   35,543.50x = 1,007,337,869.15
5. Step 5: Solve for x
   x = 1,007,337,869.15/35,543.50
6. Step 6: Final answer
   x = 28,340.99