Finding the Fourth Proportional to 13,077.83, 18,047.29 and 7,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.83 : 18,047.29 = 7,109.48 : x
2. Step 2: Convert to fraction form
   13,077.83/18,047.29 = 7,109.48/x
3. Step 3: Cross multiply
   13,077.83x = 18,047.29 × 7,109.48
4. Step 4: Simplify right side
   13,077.83x = 128,306,847.31
5. Step 5: Solve for x
   x = 128,306,847.31/13,077.83
6. Step 6: Final answer
   x = 9,811.02