Finding the Fourth Proportional to 12,715.88, 19,075.86 and 3,948.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.88 : 19,075.86 = 3,948.74 : x
2. Step 2: Convert to fraction form
   12,715.88/19,075.86 = 3,948.74/x
3. Step 3: Cross multiply
   12,715.88x = 19,075.86 × 3,948.74
4. Step 4: Simplify right side
   12,715.88x = 75,325,611.42
5. Step 5: Solve for x
   x = 75,325,611.42/12,715.88
6. Step 6: Final answer
   x = 5,923.74