Finding the Fourth Proportional to 12,499.79, 18,749.29 and 5,104.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.79 : 18,749.29 = 5,104.32 : x
2. Step 2: Convert to fraction form
   12,499.79/18,749.29 = 5,104.32/x
3. Step 3: Cross multiply
   12,499.79x = 18,749.29 × 5,104.32
4. Step 4: Simplify right side
   12,499.79x = 95,702,256.66
5. Step 5: Solve for x
   x = 95,702,256.66/12,499.79
6. Step 6: Final answer
   x = 7,656.31