Finding the Fourth Proportional to 8,809.89, 12,157.82 and 4,830.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,809.89 : 12,157.82 = 4,830.77 : x
2. Step 2: Convert to fraction form
   8,809.89/12,157.82 = 4,830.77/x
3. Step 3: Cross multiply
   8,809.89x = 12,157.82 × 4,830.77
4. Step 4: Simplify right side
   8,809.89x = 58,731,547.18
5. Step 5: Solve for x
   x = 58,731,547.18/8,809.89
6. Step 6: Final answer
   x = 6,666.55