Finding the Fourth Proportional to 9,070.56, 13,547.52 and 7,758.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,070.56 : 13,547.52 = 7,758.72 : x
2. Step 2: Convert to fraction form
   9,070.56/13,547.52 = 7,758.72/x
3. Step 3: Cross multiply
   9,070.56x = 13,547.52 × 7,758.72
4. Step 4: Simplify right side
   9,070.56x = 105,111,414.37
5. Step 5: Solve for x
   x = 105,111,414.37/9,070.56
6. Step 6: Final answer
   x = 11,588.19