Finding the Fourth Proportional to 13,786.32, 19,025.12 and 7,817.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,786.32 : 19,025.12 = 7,817.99 : x
2. Step 2: Convert to fraction form
   13,786.32/19,025.12 = 7,817.99/x
3. Step 3: Cross multiply
   13,786.32x = 19,025.12 × 7,817.99
4. Step 4: Simplify right side
   13,786.32x = 148,738,105.11
5. Step 5: Solve for x
   x = 148,738,105.11/13,786.32
6. Step 6: Final answer
   x = 10,788.82