Finding the Fourth Proportional to 9,131.89, 12,601.75 and 5,153.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.89 : 12,601.75 = 5,153.37 : x
2. Step 2: Convert to fraction form
   9,131.89/12,601.75 = 5,153.37/x
3. Step 3: Cross multiply
   9,131.89x = 12,601.75 × 5,153.37
4. Step 4: Simplify right side
   9,131.89x = 64,941,515.30
5. Step 5: Solve for x
   x = 64,941,515.30/9,131.89
6. Step 6: Final answer
   x = 7,111.51