Finding the Fourth Proportional to 12,949.68, 17,870.40 and 7,360.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,949.68 : 17,870.40 = 7,360.32 : x
2. Step 2: Convert to fraction form
   12,949.68/17,870.40 = 7,360.32/x
3. Step 3: Cross multiply
   12,949.68x = 17,870.40 × 7,360.32
4. Step 4: Simplify right side
   12,949.68x = 131,531,862.53
5. Step 5: Solve for x
   x = 131,531,862.53/12,949.68
6. Step 6: Final answer
   x = 10,157.15