Finding the Fourth Proportional to 8,870.61, 12,246.54 and 5,890.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.61 : 12,246.54 = 5,890.53 : x
2. Step 2: Convert to fraction form
   8,870.61/12,246.54 = 5,890.53/x
3. Step 3: Cross multiply
   8,870.61x = 12,246.54 × 5,890.53
4. Step 4: Simplify right side
   8,870.61x = 72,138,611.27
5. Step 5: Solve for x
   x = 72,138,611.27/8,870.61
6. Step 6: Final answer
   x = 8,132.32