Finding the Fourth Proportional to 12,298.88, 18,434.28 and 5,276.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.88 : 18,434.28 = 5,276.72 : x
2. Step 2: Convert to fraction form
   12,298.88/18,434.28 = 5,276.72/x
3. Step 3: Cross multiply
   12,298.88x = 18,434.28 × 5,276.72
4. Step 4: Simplify right side
   12,298.88x = 97,272,533.96
5. Step 5: Solve for x
   x = 97,272,533.96/12,298.88
6. Step 6: Final answer
   x = 7,909.06