Finding the Fourth Proportional to 10,391.59, 15,577.66 and 3,816.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,391.59 : 15,577.66 = 3,816.01 : x
2. Step 2: Convert to fraction form
   10,391.59/15,577.66 = 3,816.01/x
3. Step 3: Cross multiply
   10,391.59x = 15,577.66 × 3,816.01
4. Step 4: Simplify right side
   10,391.59x = 59,444,506.34
5. Step 5: Solve for x
   x = 59,444,506.34/10,391.59
6. Step 6: Final answer
   x = 5,720.44