Finding the Fourth Proportional to 9,781.21, 13,498.30 and 5,951.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781.21 : 13,498.30 = 5,951.53 : x
2. Step 2: Convert to fraction form
   9,781.21/13,498.30 = 5,951.53/x
3. Step 3: Cross multiply
   9,781.21x = 13,498.30 × 5,951.53
4. Step 4: Simplify right side
   9,781.21x = 80,335,488.77
5. Step 5: Solve for x
   x = 80,335,488.77/9,781.21
6. Step 6: Final answer
   x = 8,213.25