Finding the Fourth Proportional to 9,901.53, 14,815.38 and 9,790.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,901.53 : 14,815.38 = 9,790.81 : x
2. Step 2: Convert to fraction form
   9,901.53/14,815.38 = 9,790.81/x
3. Step 3: Cross multiply
   9,901.53x = 14,815.38 × 9,790.81
4. Step 4: Simplify right side
   9,901.53x = 145,054,570.33
5. Step 5: Solve for x
   x = 145,054,570.33/9,901.53
6. Step 6: Final answer
   x = 14,649.71