Finding the Fourth Proportional to 19,499.78, 29,253.32 and 7,813.91

Step by Step Solution

1. Step 1: Write the proportion equation
   19,499.78 : 29,253.32 = 7,813.91 : x
2. Step 2: Convert to fraction form
   19,499.78/29,253.32 = 7,813.91/x
3. Step 3: Cross multiply
   19,499.78x = 29,253.32 × 7,813.91
4. Step 4: Simplify right side
   19,499.78x = 228,582,863.28
5. Step 5: Solve for x
   x = 228,582,863.28/19,499.78
6. Step 6: Final answer
   x = 11,722.33