Finding the Fourth Proportional to 13,270.57, 19,896.63 and 5,870.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,270.57 : 19,896.63 = 5,870.99 : x
2. Step 2: Convert to fraction form
   13,270.57/19,896.63 = 5,870.99/x
3. Step 3: Cross multiply
   13,270.57x = 19,896.63 × 5,870.99
4. Step 4: Simplify right side
   13,270.57x = 116,812,915.76
5. Step 5: Solve for x
   x = 116,812,915.76/13,270.57
6. Step 6: Final answer
   x = 8,802.40