Finding the Fourth Proportional to 12,961.74, 17,887.60 and 7,373.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.74 : 17,887.60 = 7,373.10 : x
2. Step 2: Convert to fraction form
   12,961.74/17,887.60 = 7,373.10/x
3. Step 3: Cross multiply
   12,961.74x = 17,887.60 × 7,373.10
4. Step 4: Simplify right side
   12,961.74x = 131,887,063.56
5. Step 5: Solve for x
   x = 131,887,063.56/12,961.74
6. Step 6: Final answer
   x = 10,175.10