Finding the Fourth Proportional to 9,820.79, 13,553.00 and 5,572.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820.79 : 13,553.00 = 5,572.03 : x
2. Step 2: Convert to fraction form
   9,820.79/13,553.00 = 5,572.03/x
3. Step 3: Cross multiply
   9,820.79x = 13,553.00 × 5,572.03
4. Step 4: Simplify right side
   9,820.79x = 75,517,787.84
5. Step 5: Solve for x
   x = 75,517,787.84/9,820.79
6. Step 6: Final answer
   x = 7,689.58