Finding the Fourth Proportional to 9,609,399.25, 13,260,972.15 and 5,258,486.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,609,399.25 : 13,260,972.15 = 5,258,486.48 : x
2. Step 2: Convert to fraction form
   9,609,399.25/13,260,972.15 = 5,258,486.48/x
3. Step 3: Cross multiply
   9,609,399.25x = 13,260,972.15 × 5,258,486.48
4. Step 4: Simplify right side
   9,609,399.25x = 69,732,642,696,126.67
5. Step 5: Solve for x
   x = 69,732,642,696,126.67/9,609,399.25
6. Step 6: Final answer
   x = 7,256,711.99