Finding the Fourth Proportional to 28,300.69, 42,483.84 and 15,178.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,300.69 : 42,483.84 = 15,178.69 : x
2. Step 2: Convert to fraction form
   28,300.69/42,483.84 = 15,178.69/x
3. Step 3: Cross multiply
   28,300.69x = 42,483.84 × 15,178.69
4. Step 4: Simplify right side
   28,300.69x = 644,849,118.93
5. Step 5: Solve for x
   x = 644,849,118.93/28,300.69
6. Step 6: Final answer
   x = 22,785.63