Finding the Fourth Proportional to 13,271.61, 19,900.70 and 5,878.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,271.61 : 19,900.70 = 5,878.34 : x
2. Step 2: Convert to fraction form
   13,271.61/19,900.70 = 5,878.34/x
3. Step 3: Cross multiply
   13,271.61x = 19,900.70 × 5,878.34
4. Step 4: Simplify right side
   13,271.61x = 116,982,951.94
5. Step 5: Solve for x
   x = 116,982,951.94/13,271.61
6. Step 6: Final answer
   x = 8,814.53