Finding the Fourth Proportional to 9,980.03, 13,772.52 and 5,503.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.03 : 13,772.52 = 5,503.95 : x
2. Step 2: Convert to fraction form
   9,980.03/13,772.52 = 5,503.95/x
3. Step 3: Cross multiply
   9,980.03x = 13,772.52 × 5,503.95
4. Step 4: Simplify right side
   9,980.03x = 75,803,261.45
5. Step 5: Solve for x
   x = 75,803,261.45/9,980.03
6. Step 6: Final answer
   x = 7,595.50