Finding the Fourth Proportional to 10,736, 14,803.20 and 10,071.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,736 : 14,803.20 = 10,071.80 : x
2. Step 2: Convert to fraction form
   10,736/14,803.20 = 10,071.80/x
3. Step 3: Cross multiply
   10,736x = 14,803.20 × 10,071.80
4. Step 4: Simplify right side
   10,736x = 149,094,869.76
5. Step 5: Solve for x
   x = 149,094,869.76/10,736
6. Step 6: Final answer
   x = 13,887.38