Finding the Fourth Proportional to 39,002.01, 58,507.88 and 12,699.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,002.01 : 58,507.88 = 12,699.69 : x
2. Step 2: Convert to fraction form
   39,002.01/58,507.88 = 12,699.69/x
3. Step 3: Cross multiply
   39,002.01x = 58,507.88 × 12,699.69
4. Step 4: Simplify right side
   39,002.01x = 743,031,938.56
5. Step 5: Solve for x
   x = 743,031,938.56/39,002.01
6. Step 6: Final answer
   x = 19,051.12