Finding the Fourth Proportional to 19,930.99, 27,506.01 and 10,978.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,930.99 : 27,506.01 = 10,978.49 : x
2. Step 2: Convert to fraction form
   19,930.99/27,506.01 = 10,978.49/x
3. Step 3: Cross multiply
   19,930.99x = 27,506.01 × 10,978.49
4. Step 4: Simplify right side
   19,930.99x = 301,974,455.72
5. Step 5: Solve for x
   x = 301,974,455.72/19,930.99
6. Step 6: Final answer
   x = 15,151.00