Finding the Fourth Proportional to 9,915.83, 14,877.64 and 4,365.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.83 : 14,877.64 = 4,365.28 : x
2. Step 2: Convert to fraction form
   9,915.83/14,877.64 = 4,365.28/x
3. Step 3: Cross multiply
   9,915.83x = 14,877.64 × 4,365.28
4. Step 4: Simplify right side
   9,915.83x = 64,945,068.31
5. Step 5: Solve for x
   x = 64,945,068.31/9,915.83
6. Step 6: Final answer
   x = 6,549.63