Finding the Fourth Proportional to 8,961.90, 12,364.14 and 5,423.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,961.90 : 12,364.14 = 5,423.82 : x
2. Step 2: Convert to fraction form
   8,961.90/12,364.14 = 5,423.82/x
3. Step 3: Cross multiply
   8,961.90x = 12,364.14 × 5,423.82
4. Step 4: Simplify right side
   8,961.90x = 67,060,869.81
5. Step 5: Solve for x
   x = 67,060,869.81/8,961.90
6. Step 6: Final answer
   x = 7,482.89