Finding the Fourth Proportional to 10,071.20, 13,898.57 and 5,595.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071.20 : 13,898.57 = 5,595.31 : x
2. Step 2: Convert to fraction form
   10,071.20/13,898.57 = 5,595.31/x
3. Step 3: Cross multiply
   10,071.20x = 13,898.57 × 5,595.31
4. Step 4: Simplify right side
   10,071.20x = 77,766,769.94
5. Step 5: Solve for x
   x = 77,766,769.94/10,071.20
6. Step 6: Final answer
   x = 7,721.70