Finding the Fourth Proportional to 13,280.95, 19,912.18 and 5,881.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,280.95 : 19,912.18 = 5,881.40 : x
2. Step 2: Convert to fraction form
   13,280.95/19,912.18 = 5,881.40/x
3. Step 3: Cross multiply
   13,280.95x = 19,912.18 × 5,881.40
4. Step 4: Simplify right side
   13,280.95x = 117,111,495.45
5. Step 5: Solve for x
   x = 117,111,495.45/13,280.95
6. Step 6: Final answer
   x = 8,818.01