Finding the Fourth Proportional to 28,259.10, 42,409.71 and 10,763.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,259.10 : 42,409.71 = 10,763.10 : x
2. Step 2: Convert to fraction form
   28,259.10/42,409.71 = 10,763.10/x
3. Step 3: Cross multiply
   28,259.10x = 42,409.71 × 10,763.10
4. Step 4: Simplify right side
   28,259.10x = 456,459,949.70
5. Step 5: Solve for x
   x = 456,459,949.70/28,259.10
6. Step 6: Final answer
   x = 16,152.67