Finding the Fourth Proportional to 14,109.78, 21,165.74 and 4,749.83

Step by Step Solution

1. Step 1: Write the proportion equation
   14,109.78 : 21,165.74 = 4,749.83 : x
2. Step 2: Convert to fraction form
   14,109.78/21,165.74 = 4,749.83/x
3. Step 3: Cross multiply
   14,109.78x = 21,165.74 × 4,749.83
4. Step 4: Simplify right side
   14,109.78x = 100,533,666.82
5. Step 5: Solve for x
   x = 100,533,666.82/14,109.78
6. Step 6: Final answer
   x = 7,125.11