Finding the Fourth Proportional to 14,561.08, 21,840.72 and 7,158.08

Step by Step Solution

1. Step 1: Write the proportion equation
   14,561.08 : 21,840.72 = 7,158.08 : x
2. Step 2: Convert to fraction form
   14,561.08/21,840.72 = 7,158.08/x
3. Step 3: Cross multiply
   14,561.08x = 21,840.72 × 7,158.08
4. Step 4: Simplify right side
   14,561.08x = 156,337,621.02
5. Step 5: Solve for x
   x = 156,337,621.02/14,561.08
6. Step 6: Final answer
   x = 10,736.68