Finding the Fourth Proportional to 13,623.31, 18,798.24 and 7,654.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,623.31 : 18,798.24 = 7,654.69 : x
2. Step 2: Convert to fraction form
   13,623.31/18,798.24 = 7,654.69/x
3. Step 3: Cross multiply
   13,623.31x = 18,798.24 × 7,654.69
4. Step 4: Simplify right side
   13,623.31x = 143,894,699.75
5. Step 5: Solve for x
   x = 143,894,699.75/13,623.31
6. Step 6: Final answer
   x = 10,562.39