Finding the Fourth Proportional to 10,637.31, 14,679.59 and 5,921.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,637.31 : 14,679.59 = 5,921.70 : x
2. Step 2: Convert to fraction form
   10,637.31/14,679.59 = 5,921.70/x
3. Step 3: Cross multiply
   10,637.31x = 14,679.59 × 5,921.70
4. Step 4: Simplify right side
   10,637.31x = 86,928,128.10
5. Step 5: Solve for x
   x = 86,928,128.10/10,637.31
6. Step 6: Final answer
   x = 8,172.00