Finding the Fourth Proportional to 9,131.17, 12,600.79 and 5,152.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.17 : 12,600.79 = 5,152.18 : x
2. Step 2: Convert to fraction form
   9,131.17/12,600.79 = 5,152.18/x
3. Step 3: Cross multiply
   9,131.17x = 12,600.79 × 5,152.18
4. Step 4: Simplify right side
   9,131.17x = 64,921,538.22
5. Step 5: Solve for x
   x = 64,921,538.22/9,131.17
6. Step 6: Final answer
   x = 7,109.88