Finding the Fourth Proportional to 9,965,191.86, 13,751,964.63 and 5,381,513.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965,191.86 : 13,751,964.63 = 5,381,513.10 : x
2. Step 2: Convert to fraction form
   9,965,191.86/13,751,964.63 = 5,381,513.10/x
3. Step 3: Cross multiply
   9,965,191.86x = 13,751,964.63 × 5,381,513.10
4. Step 4: Simplify right side
   9,965,191.86x = 74,006,377,807,081.66
5. Step 5: Solve for x
   x = 74,006,377,807,081.66/9,965,191.86
6. Step 6: Final answer
   x = 7,426,488.00