Finding the Fourth Proportional to 19,926.47, 27,499.10 and 10,974.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,926.47 : 27,499.10 = 10,974.61 : x
2. Step 2: Convert to fraction form
   19,926.47/27,499.10 = 10,974.61/x
3. Step 3: Cross multiply
   19,926.47x = 27,499.10 × 10,974.61
4. Step 4: Simplify right side
   19,926.47x = 301,791,897.85
5. Step 5: Solve for x
   x = 301,791,897.85/19,926.47
6. Step 6: Final answer
   x = 15,145.28