Finding the Fourth Proportional to 9,131.09, 12,600.54 and 5,151.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.09 : 12,600.54 = 5,151.96 : x
2. Step 2: Convert to fraction form
   9,131.09/12,600.54 = 5,151.96/x
3. Step 3: Cross multiply
   9,131.09x = 12,600.54 × 5,151.96
4. Step 4: Simplify right side
   9,131.09x = 64,917,478.06
5. Step 5: Solve for x
   x = 64,917,478.06/9,131.09
6. Step 6: Final answer
   x = 7,109.50