Finding the Fourth Proportional to 10,003.88, 13,805.28 and 5,528

Step by Step Solution

1. Step 1: Write the proportion equation
   10,003.88 : 13,805.28 = 5,528 : x
2. Step 2: Convert to fraction form
   10,003.88/13,805.28 = 5,528/x
3. Step 3: Cross multiply
   10,003.88x = 13,805.28 × 5,528
4. Step 4: Simplify right side
   10,003.88x = 76,315,587.84
5. Step 5: Solve for x
   x = 76,315,587.84/10,003.88
6. Step 6: Final answer
   x = 7,628.60