Finding the Fourth Proportional to 10,618.08, 14,654.43 and 7,643.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,618.08 : 14,654.43 = 7,643.76 : x
2. Step 2: Convert to fraction form
   10,618.08/14,654.43 = 7,643.76/x
3. Step 3: Cross multiply
   10,618.08x = 14,654.43 × 7,643.76
4. Step 4: Simplify right side
   10,618.08x = 112,014,945.86
5. Step 5: Solve for x
   x = 112,014,945.86/10,618.08
6. Step 6: Final answer
   x = 10,549.45