Finding the Fourth Proportional to 12,612.40, 18,915.56 and 5,588.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612.40 : 18,915.56 = 5,588.52 : x
2. Step 2: Convert to fraction form
   12,612.40/18,915.56 = 5,588.52/x
3. Step 3: Cross multiply
   12,612.40x = 18,915.56 × 5,588.52
4. Step 4: Simplify right side
   12,612.40x = 105,709,985.37
5. Step 5: Solve for x
   x = 105,709,985.37/12,612.40
6. Step 6: Final answer
   x = 8,381.43