Finding the Fourth Proportional to 10,065.69, 15,102.80 and 5,384.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.69 : 15,102.80 = 5,384.47 : x
2. Step 2: Convert to fraction form
   10,065.69/15,102.80 = 5,384.47/x
3. Step 3: Cross multiply
   10,065.69x = 15,102.80 × 5,384.47
4. Step 4: Simplify right side
   10,065.69x = 81,320,546.59
5. Step 5: Solve for x
   x = 81,320,546.59/10,065.69
6. Step 6: Final answer
   x = 8,078.99