Finding the Fourth Proportional to 9,978.48, 14,970.96 and 4,783.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.48 : 14,970.96 = 4,783.68 : x
2. Step 2: Convert to fraction form
   9,978.48/14,970.96 = 4,783.68/x
3. Step 3: Cross multiply
   9,978.48x = 14,970.96 × 4,783.68
4. Step 4: Simplify right side
   9,978.48x = 71,616,281.93
5. Step 5: Solve for x
   x = 71,616,281.93/9,978.48
6. Step 6: Final answer
   x = 7,177.07