Finding the Fourth Proportional to 9,101.64, 12,561.47 and 5,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,101.64 : 12,561.47 = 5,123.52 : x
2. Step 2: Convert to fraction form
   9,101.64/12,561.47 = 5,123.52/x
3. Step 3: Cross multiply
   9,101.64x = 12,561.47 × 5,123.52
4. Step 4: Simplify right side
   9,101.64x = 64,358,948.56
5. Step 5: Solve for x
   x = 64,358,948.56/9,101.64
6. Step 6: Final answer
   x = 7,071.14