Finding the Fourth Proportional to 8,892.32, 12,271.51 and 4,913.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.32 : 12,271.51 = 4,913.40 : x
2. Step 2: Convert to fraction form
   8,892.32/12,271.51 = 4,913.40/x
3. Step 3: Cross multiply
   8,892.32x = 12,271.51 × 4,913.40
4. Step 4: Simplify right side
   8,892.32x = 60,294,837.23
5. Step 5: Solve for x
   x = 60,294,837.23/8,892.32
6. Step 6: Final answer
   x = 6,780.55