Finding the Fourth Proportional to 9,137.60, 12,612.51 and 5,360.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,137.60 : 12,612.51 = 5,360.91 : x
2. Step 2: Convert to fraction form
   9,137.60/12,612.51 = 5,360.91/x
3. Step 3: Cross multiply
   9,137.60x = 12,612.51 × 5,360.91
4. Step 4: Simplify right side
   9,137.60x = 67,614,530.98
5. Step 5: Solve for x
   x = 67,614,530.98/9,137.60
6. Step 6: Final answer
   x = 7,399.60