Finding the Fourth Proportional to 11,090.72, 15,301.55 and 7,904.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,090.72 : 15,301.55 = 7,904.52 : x
2. Step 2: Convert to fraction form
   11,090.72/15,301.55 = 7,904.52/x
3. Step 3: Cross multiply
   11,090.72x = 15,301.55 × 7,904.52
4. Step 4: Simplify right side
   11,090.72x = 120,951,368.48
5. Step 5: Solve for x
   x = 120,951,368.48/11,090.72
6. Step 6: Final answer
   x = 10,905.64