Finding the Fourth Proportional to 12,904.32, 17,806.32 and 7,315.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,904.32 : 17,806.32 = 7,315.32 : x
2. Step 2: Convert to fraction form
   12,904.32/17,806.32 = 7,315.32/x
3. Step 3: Cross multiply
   12,904.32x = 17,806.32 × 7,315.32
4. Step 4: Simplify right side
   12,904.32x = 130,258,928.82
5. Step 5: Solve for x
   x = 130,258,928.82/12,904.32
6. Step 6: Final answer
   x = 10,094.21