Finding the Fourth Proportional to 9,989,656.83, 14,978,417.18 and 3,917,113.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989,656.83 : 14,978,417.18 = 3,917,113.47 : x
2. Step 2: Convert to fraction form
   9,989,656.83/14,978,417.18 = 3,917,113.47/x
3. Step 3: Cross multiply
   9,989,656.83x = 14,978,417.18 × 3,917,113.47
4. Step 4: Simplify right side
   9,989,656.83x = 58,672,159,675,471.85
5. Step 5: Solve for x
   x = 58,672,159,675,471.85/9,989,656.83
6. Step 6: Final answer
   x = 5,873,290.81