Finding the Fourth Proportional to 19,929.67, 27,502.61 and 10,978.00

Step by Step Solution

1. Step 1: Write the proportion equation
   19,929.67 : 27,502.61 = 10,978.00 : x
2. Step 2: Convert to fraction form
   19,929.67/27,502.61 = 10,978.00/x
3. Step 3: Cross multiply
   19,929.67x = 27,502.61 × 10,978.00
4. Step 4: Simplify right side
   19,929.67x = 301,923,528.93
5. Step 5: Solve for x
   x = 301,923,528.93/19,929.67
6. Step 6: Final answer
   x = 15,149.45