Finding the Fourth Proportional to 10,109.60, 15,172.34 and 7,011.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.60 : 15,172.34 = 7,011.35 : x
2. Step 2: Convert to fraction form
   10,109.60/15,172.34 = 7,011.35/x
3. Step 3: Cross multiply
   10,109.60x = 15,172.34 × 7,011.35
4. Step 4: Simplify right side
   10,109.60x = 106,378,551.00
5. Step 5: Solve for x
   x = 106,378,551.00/10,109.60
6. Step 6: Final answer
   x = 10,522.53