Finding the Fourth Proportional to 8,749.71, 13,111.29 and 7,109.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,749.71 : 13,111.29 = 7,109.46 : x
2. Step 2: Convert to fraction form
   8,749.71/13,111.29 = 7,109.46/x
3. Step 3: Cross multiply
   8,749.71x = 13,111.29 × 7,109.46
4. Step 4: Simplify right side
   8,749.71x = 93,214,191.80
5. Step 5: Solve for x
   x = 93,214,191.80/8,749.71
6. Step 6: Final answer
   x = 10,653.40