Finding the Fourth Proportional to 35,870.72, 53,806.35 and 12,497.12

Step by Step Solution

1. Step 1: Write the proportion equation
   35,870.72 : 53,806.35 = 12,497.12 : x
2. Step 2: Convert to fraction form
   35,870.72/53,806.35 = 12,497.12/x
3. Step 3: Cross multiply
   35,870.72x = 53,806.35 × 12,497.12
4. Step 4: Simplify right side
   35,870.72x = 672,424,412.71
5. Step 5: Solve for x
   x = 672,424,412.71/35,870.72
6. Step 6: Final answer
   x = 18,745.77