Finding the Fourth Proportional to 11,109.20, 16,663.86 and 4,530.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,109.20 : 16,663.86 = 4,530.78 : x
2. Step 2: Convert to fraction form
   11,109.20/16,663.86 = 4,530.78/x
3. Step 3: Cross multiply
   11,109.20x = 16,663.86 × 4,530.78
4. Step 4: Simplify right side
   11,109.20x = 75,500,283.61
5. Step 5: Solve for x
   x = 75,500,283.61/11,109.20
6. Step 6: Final answer
   x = 6,796.20