Finding the Fourth Proportional to 9,261.49, 12,780.88 and 5,012.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.49 : 12,780.88 = 5,012.56 : x
2. Step 2: Convert to fraction form
   9,261.49/12,780.88 = 5,012.56/x
3. Step 3: Cross multiply
   9,261.49x = 12,780.88 × 5,012.56
4. Step 4: Simplify right side
   9,261.49x = 64,064,874.82
5. Step 5: Solve for x
   x = 64,064,874.82/9,261.49
6. Step 6: Final answer
   x = 6,917.34