Finding the Fourth Proportional to 10,726.31, 16,071.89 and 10,316.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,726.31 : 16,071.89 = 10,316.25 : x
2. Step 2: Convert to fraction form
   10,726.31/16,071.89 = 10,316.25/x
3. Step 3: Cross multiply
   10,726.31x = 16,071.89 × 10,316.25
4. Step 4: Simplify right side
   10,726.31x = 165,801,583.63
5. Step 5: Solve for x
   x = 165,801,583.63/10,726.31
6. Step 6: Final answer
   x = 15,457.47