Finding the Fourth Proportional to 11,051.74, 15,242.61 and 7,815.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,051.74 : 15,242.61 = 7,815.82 : x
2. Step 2: Convert to fraction form
   11,051.74/15,242.61 = 7,815.82/x
3. Step 3: Cross multiply
   11,051.74x = 15,242.61 × 7,815.82
4. Step 4: Simplify right side
   11,051.74x = 119,133,496.09
5. Step 5: Solve for x
   x = 119,133,496.09/11,051.74
6. Step 6: Final answer
   x = 10,779.61