Finding the Fourth Proportional to 9,980.51, 14,970.83 and 4,770.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980.51 : 14,970.83 = 4,770.59 : x
2. Step 2: Convert to fraction form
   9,980.51/14,970.83 = 4,770.59/x
3. Step 3: Cross multiply
   9,980.51x = 14,970.83 × 4,770.59
4. Step 4: Simplify right side
   9,980.51x = 71,419,593.18
5. Step 5: Solve for x
   x = 71,419,593.18/9,980.51
6. Step 6: Final answer
   x = 7,155.91