Finding the Fourth Proportional to 8,953.16, 13,435.86 and 3,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,953.16 : 13,435.86 = 3,109.72 : x
2. Step 2: Convert to fraction form
   8,953.16/13,435.86 = 3,109.72/x
3. Step 3: Cross multiply
   8,953.16x = 13,435.86 × 3,109.72
4. Step 4: Simplify right side
   8,953.16x = 41,781,762.56
5. Step 5: Solve for x
   x = 41,781,762.56/8,953.16
6. Step 6: Final answer
   x = 4,666.71