Finding the Fourth Proportional to 19,196.40, 26,490.72 and 10,812.96

Step by Step Solution

1. Step 1: Write the proportion equation
   19,196.40 : 26,490.72 = 10,812.96 : x
2. Step 2: Convert to fraction form
   19,196.40/26,490.72 = 10,812.96/x
3. Step 3: Cross multiply
   19,196.40x = 26,490.72 × 10,812.96
4. Step 4: Simplify right side
   19,196.40x = 286,443,095.73
5. Step 5: Solve for x
   x = 286,443,095.73/19,196.40
6. Step 6: Final answer
   x = 14,921.71