Finding the Fourth Proportional to 10,009.04, 15,013.01 and 5,078.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,009.04 : 15,013.01 = 5,078.55 : x
2. Step 2: Convert to fraction form
   10,009.04/15,013.01 = 5,078.55/x
3. Step 3: Cross multiply
   10,009.04x = 15,013.01 × 5,078.55
4. Step 4: Simplify right side
   10,009.04x = 76,244,321.94
5. Step 5: Solve for x
   x = 76,244,321.94/10,009.04
6. Step 6: Final answer
   x = 7,617.55