Finding the Fourth Proportional to 9,011.84, 12,436.56 and 4,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,011.84 : 12,436.56 = 4,978.92 : x
2. Step 2: Convert to fraction form
   9,011.84/12,436.56 = 4,978.92/x
3. Step 3: Cross multiply
   9,011.84x = 12,436.56 × 4,978.92
4. Step 4: Simplify right side
   9,011.84x = 61,920,637.32
5. Step 5: Solve for x
   x = 61,920,637.32/9,011.84
6. Step 6: Final answer
   x = 6,871.03