Finding the Fourth Proportional to 9,516,888, 13,132,949.76 and 5,165,881.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,516,888 : 13,132,949.76 = 5,165,881.20 : x
2. Step 2: Convert to fraction form
   9,516,888/13,132,949.76 = 5,165,881.20/x
3. Step 3: Cross multiply
   9,516,888x = 13,132,949.76 × 5,165,881.20
4. Step 4: Simplify right side
   9,516,888x = 67,843,258,265,728.52
5. Step 5: Solve for x
   x = 67,843,258,265,728.52/9,516,888
6. Step 6: Final answer
   x = 7,128,722.99