Finding the Fourth Proportional to 10,005.10, 13,807.55 and 5,528.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,005.10 : 13,807.55 = 5,528.81 : x
2. Step 2: Convert to fraction form
   10,005.10/13,807.55 = 5,528.81/x
3. Step 3: Cross multiply
   10,005.10x = 13,807.55 × 5,528.81
4. Step 4: Simplify right side
   10,005.10x = 76,339,320.52
5. Step 5: Solve for x
   x = 76,339,320.52/10,005.10
6. Step 6: Final answer
   x = 7,630.04