Finding the Fourth Proportional to 19,930.52, 27,504.15 and 10,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   19,930.52 : 27,504.15 = 10,978.04 : x
2. Step 2: Convert to fraction form
   19,930.52/27,504.15 = 10,978.04/x
3. Step 3: Cross multiply
   19,930.52x = 27,504.15 × 10,978.04
4. Step 4: Simplify right side
   19,930.52x = 301,941,658.87
5. Step 5: Solve for x
   x = 301,941,658.87/19,930.52
6. Step 6: Final answer
   x = 15,149.71