Finding the Fourth Proportional to 10,113.56, 13,957.15 and 5,637.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,113.56 : 13,957.15 = 5,637.31 : x
2. Step 2: Convert to fraction form
   10,113.56/13,957.15 = 5,637.31/x
3. Step 3: Cross multiply
   10,113.56x = 13,957.15 × 5,637.31
4. Step 4: Simplify right side
   10,113.56x = 78,680,753.08
5. Step 5: Solve for x
   x = 78,680,753.08/10,113.56
6. Step 6: Final answer
   x = 7,779.73