Finding the Fourth Proportional to 12,696.90, 19,045.89 and 3,931.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.90 : 19,045.89 = 3,931.98 : x
2. Step 2: Convert to fraction form
   12,696.90/19,045.89 = 3,931.98/x
3. Step 3: Cross multiply
   12,696.90x = 19,045.89 × 3,931.98
4. Step 4: Simplify right side
   12,696.90x = 74,888,058.56
5. Step 5: Solve for x
   x = 74,888,058.56/12,696.90
6. Step 6: Final answer
   x = 5,898.14