Finding the Fourth Proportional to 14,103.12, 19,461.42 and 7,815

Step by Step Solution

1. Step 1: Write the proportion equation
   14,103.12 : 19,461.42 = 7,815 : x
2. Step 2: Convert to fraction form
   14,103.12/19,461.42 = 7,815/x
3. Step 3: Cross multiply
   14,103.12x = 19,461.42 × 7,815
4. Step 4: Simplify right side
   14,103.12x = 152,090,997.30
5. Step 5: Solve for x
   x = 152,090,997.30/14,103.12
6. Step 6: Final answer
   x = 10,784.21