Finding the Fourth Proportional to 45,918.83, 68,870.18 and 12,630.87

Step by Step Solution

1. Step 1: Write the proportion equation
   45,918.83 : 68,870.18 = 12,630.87 : x
2. Step 2: Convert to fraction form
   45,918.83/68,870.18 = 12,630.87/x
3. Step 3: Cross multiply
   45,918.83x = 68,870.18 × 12,630.87
4. Step 4: Simplify right side
   45,918.83x = 869,890,322.03
5. Step 5: Solve for x
   x = 869,890,322.03/45,918.83
6. Step 6: Final answer
   x = 18,944.09