Finding the Fourth Proportional to 9,261.84, 12,781.40 and 5,070.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.84 : 12,781.40 = 5,070.09 : x
2. Step 2: Convert to fraction form
   9,261.84/12,781.40 = 5,070.09/x
3. Step 3: Cross multiply
   9,261.84x = 12,781.40 × 5,070.09
4. Step 4: Simplify right side
   9,261.84x = 64,802,870.91
5. Step 5: Solve for x
   x = 64,802,870.91/9,261.84
6. Step 6: Final answer
   x = 6,996.76