Finding the Fourth Proportional to 9,051.34, 12,491.02 and 5,072.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,051.34 : 12,491.02 = 5,072.40 : x
2. Step 2: Convert to fraction form
   9,051.34/12,491.02 = 5,072.40/x
3. Step 3: Cross multiply
   9,051.34x = 12,491.02 × 5,072.40
4. Step 4: Simplify right side
   9,051.34x = 63,359,449.85
5. Step 5: Solve for x
   x = 63,359,449.85/9,051.34
6. Step 6: Final answer
   x = 7,000.01