Finding the Fourth Proportional to 11,505.76, 15,878.78 and 7,030.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,505.76 : 15,878.78 = 7,030.37 : x
2. Step 2: Convert to fraction form
   11,505.76/15,878.78 = 7,030.37/x
3. Step 3: Cross multiply
   11,505.76x = 15,878.78 × 7,030.37
4. Step 4: Simplify right side
   11,505.76x = 111,633,724.34
5. Step 5: Solve for x
   x = 111,633,724.34/11,505.76
6. Step 6: Final answer
   x = 9,702.42