Finding the Fourth Proportional to 28,602.50, 42,910.23 and 10,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,602.50 : 42,910.23 = 10,134.50 : x
2. Step 2: Convert to fraction form
   28,602.50/42,910.23 = 10,134.50/x
3. Step 3: Cross multiply
   28,602.50x = 42,910.23 × 10,134.50
4. Step 4: Simplify right side
   28,602.50x = 434,873,725.94
5. Step 5: Solve for x
   x = 434,873,725.94/28,602.50
6. Step 6: Final answer
   x = 15,204.05