Finding the Fourth Proportional to 12,900.72, 19,347.81 and 5,000.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900.72 : 19,347.81 = 5,000.52 : x
2. Step 2: Convert to fraction form
   12,900.72/19,347.81 = 5,000.52/x
3. Step 3: Cross multiply
   12,900.72x = 19,347.81 × 5,000.52
4. Step 4: Simplify right side
   12,900.72x = 96,749,110.86
5. Step 5: Solve for x
   x = 96,749,110.86/12,900.72
6. Step 6: Final answer
   x = 7,499.51