Finding the Fourth Proportional to 9,301.56, 12,836.10 and 5,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,301.56 : 12,836.10 = 5,109.72 : x
2. Step 2: Convert to fraction form
   9,301.56/12,836.10 = 5,109.72/x
3. Step 3: Cross multiply
   9,301.56x = 12,836.10 × 5,109.72
4. Step 4: Simplify right side
   9,301.56x = 65,588,876.89
5. Step 5: Solve for x
   x = 65,588,876.89/9,301.56
6. Step 6: Final answer
   x = 7,051.38