Finding the Fourth Proportional to 9,948.86, 14,903.73 and 5,780.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,948.86 : 14,903.73 = 5,780.12 : x
2. Step 2: Convert to fraction form
   9,948.86/14,903.73 = 5,780.12/x
3. Step 3: Cross multiply
   9,948.86x = 14,903.73 × 5,780.12
4. Step 4: Simplify right side
   9,948.86x = 86,145,315.25
5. Step 5: Solve for x
   x = 86,145,315.25/9,948.86
6. Step 6: Final answer
   x = 8,658.81