Finding the Fourth Proportional to 12,930.74, 19,399.18 and 4,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,930.74 : 19,399.18 = 4,611.50 : x
2. Step 2: Convert to fraction form
   12,930.74/19,399.18 = 4,611.50/x
3. Step 3: Cross multiply
   12,930.74x = 19,399.18 × 4,611.50
4. Step 4: Simplify right side
   12,930.74x = 89,459,318.57
5. Step 5: Solve for x
   x = 89,459,318.57/12,930.74
6. Step 6: Final answer
   x = 6,918.34