Finding the Fourth Proportional to 9,885.04, 13,642.68 and 5,579

Step by Step Solution

1. Step 1: Write the proportion equation
   9,885.04 : 13,642.68 = 5,579 : x
2. Step 2: Convert to fraction form
   9,885.04/13,642.68 = 5,579/x
3. Step 3: Cross multiply
   9,885.04x = 13,642.68 × 5,579
4. Step 4: Simplify right side
   9,885.04x = 76,112,511.72
5. Step 5: Solve for x
   x = 76,112,511.72/9,885.04
6. Step 6: Final answer
   x = 7,699.77