Finding the Fourth Proportional to 8,915.00, 12,302.28 and 5,138.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,915.00 : 12,302.28 = 5,138.84 : x
2. Step 2: Convert to fraction form
   8,915.00/12,302.28 = 5,138.84/x
3. Step 3: Cross multiply
   8,915.00x = 12,302.28 × 5,138.84
4. Step 4: Simplify right side
   8,915.00x = 63,219,387.04
5. Step 5: Solve for x
   x = 63,219,387.04/8,915.00
6. Step 6: Final answer
   x = 7,091.35