Finding the Fourth Proportional to 12,904.32, 19,358.16 and 3,670.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,904.32 : 19,358.16 = 3,670.56 : x
2. Step 2: Convert to fraction form
   12,904.32/19,358.16 = 3,670.56/x
3. Step 3: Cross multiply
   12,904.32x = 19,358.16 × 3,670.56
4. Step 4: Simplify right side
   12,904.32x = 71,055,287.77
5. Step 5: Solve for x
   x = 71,055,287.77/12,904.32
6. Step 6: Final answer
   x = 5,506.32