Finding the Fourth Proportional to 9,213.77, 12,711.40 and 5,670.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,213.77 : 12,711.40 = 5,670.83 : x
2. Step 2: Convert to fraction form
   9,213.77/12,711.40 = 5,670.83/x
3. Step 3: Cross multiply
   9,213.77x = 12,711.40 × 5,670.83
4. Step 4: Simplify right side
   9,213.77x = 72,084,188.46
5. Step 5: Solve for x
   x = 72,084,188.46/9,213.77
6. Step 6: Final answer
   x = 7,823.53