Finding the Fourth Proportional to 12,931.76, 19,394.06 and 3,569.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.76 : 19,394.06 = 3,569.58 : x
2. Step 2: Convert to fraction form
   12,931.76/19,394.06 = 3,569.58/x
3. Step 3: Cross multiply
   12,931.76x = 19,394.06 × 3,569.58
4. Step 4: Simplify right side
   12,931.76x = 69,228,630.85
5. Step 5: Solve for x
   x = 69,228,630.85/12,931.76
6. Step 6: Final answer
   x = 5,353.38